diff --git a/awx/ui/static/js/system-tracking/data-services/dedupe-versions.js b/awx/ui/static/js/system-tracking/data-services/dedupe-versions.js
new file mode 100644
index 0000000000..789d1cd61e
--- /dev/null
+++ b/awx/ui/static/js/system-tracking/data-services/dedupe-versions.js
@@ -0,0 +1,36 @@
+export default
+    function dedupeVersions(nonEmptyResults) {
+
+        if (_.any(nonEmptyResults, 'versions.length', 0)) {
+            return _.pluck(nonEmptyResults, 'versions[0]');
+        }
+
+        var firstTimestamp = nonEmptyResults[0].versions[0].timestamp;
+
+        var hostIdsWithDupes =
+            _(nonEmptyResults)
+                .pluck('versions[0]')
+                .filter('timestamp', firstTimestamp)
+                .map(function(version, index) {
+                    return nonEmptyResults[index].hostId;
+                })
+                .value();
+
+        if (hostIdsWithDupes.length === 1) {
+            return _.pluck(nonEmptyResults, 'versions[0]');
+        }
+
+        var bestScanResults = _.max(nonEmptyResults, "versions.length");
+
+        return nonEmptyResults.map(function(scan, index) {
+            var hasDupe =
+                _.include(hostIdsWithDupes, scan.hostId);
+
+            if (hasDupe && index === 1) {
+                return bestScanResults.versions[0];
+            } else {
+                return bestScanResults.versions[1];
+            }
+        });
+
+    }
diff --git a/awx/ui/static/js/system-tracking/data-services/fact-scan-data.service.js b/awx/ui/static/js/system-tracking/data-services/fact-scan-data.service.js
index 6caa558aab..9805dfdf2d 100644
--- a/awx/ui/static/js/system-tracking/data-services/fact-scan-data.service.js
+++ b/awx/ui/static/js/system-tracking/data-services/fact-scan-data.service.js
@@ -51,7 +51,8 @@ function (Rest, GetBasePath, ProcessErrors, _) {
             Rest.setUrl(url);
             promise = Rest.get();
             return promise.then(function(response) {
-                return response.data.results;
+                versionParams.versions = response.data.results;
+                return versionParams;
             }).catch(function (response) {
                 ProcessErrors(null, response.data, response.status, null, {
                     hdr: 'Error!',
diff --git a/awx/ui/static/js/system-tracking/data-services/get-data-for-comparison.factory.js b/awx/ui/static/js/system-tracking/data-services/get-data-for-comparison.factory.js
index a45249d483..0e6e47ac45 100644
--- a/awx/ui/static/js/system-tracking/data-services/get-data-for-comparison.factory.js
+++ b/awx/ui/static/js/system-tracking/data-services/get-data-for-comparison.factory.js
@@ -4,15 +4,20 @@
  * All Rights Reserved
  *************************************************/
 
+import dedupeVersions from './dedupe-versions';
+
 export default
     [   'factScanDataService',
         'getModuleOptions',
-        'resolveVersions',
+        'resolveEmptyVersions',
         'lodashAsPromised',
-        function(factScanDataService, getModuleOptions, resolveVersions, _) {
+        function(factScanDataService, getModuleOptions, resolveEmptyVersions, _) {
             return function(hostIds, moduleName, leftDate, rightDate) {
 
+                var singleHostMode = false;
+
                 if (hostIds.length === 1) {
+                    singleHostMode = true;
                     hostIds = hostIds.concat(hostIds[0]);
                 }
 
@@ -27,26 +32,36 @@ export default
                      }
                     ];
 
-                return _(hostVersionParams)
-                        .map(function(versionParam) {
-                            var versionWithRequest =
-                                [   versionParam,
-                                    factScanDataService.
-                                     getVersion(versionParam)
-                                ];
+                return _(factScanDataService.getVersion(hostVersionParams[1]))
+                        .then(function(result) {
+                            return resolveEmptyVersions(result);
+                        }).thenAll(function(firstResult) {
 
-                            return versionWithRequest;
-                        }).thenAll(function(versions) {
-                            return resolveVersions(versions);
-                        }, true)
-                        .thenMap(function(versionData) {
+                            return factScanDataService.getVersion(hostVersionParams[0])
+                                    .then(function(secondResult) {
+                                        if (_.isEmpty(secondResult.versions)) {
+                                            secondResult = resolveEmptyVersions(secondResult);
+                                        }
+
+                                        return [firstResult, secondResult];
+                                    });
+                        }).thenAll(function(results) {
+                            var finalSet;
+
+                            if (singleHostMode) {
+                                finalSet = dedupeVersions(results.reverse());
+                            } else {
+                                finalSet = _.pluck(results, 'versions[0]').reverse();
+                            }
+
+                            return finalSet;
+                        }).thenMap(function(versionData) {
                             if (versionData) {
                                 return factScanDataService.getFacts(versionData);
                             } else {
                                 return { fact: [] };
                             }
-                        })
-                        .thenAll(function(hostFacts) {
+                        }).thenAll(function(hostFacts) {
                             return hostFacts;
                         });
             };
diff --git a/awx/ui/static/js/system-tracking/data-services/resolve-empty-versions.factory.js b/awx/ui/static/js/system-tracking/data-services/resolve-empty-versions.factory.js
new file mode 100644
index 0000000000..127e80af41
--- /dev/null
+++ b/awx/ui/static/js/system-tracking/data-services/resolve-empty-versions.factory.js
@@ -0,0 +1,31 @@
+import moment from 'tower/shared/moment/moment';
+
+function resolveEmptyVersions(service, _, candidate, previousResult) {
+
+    candidate = _.merge({}, candidate);
+
+    if (_.isEmpty(candidate.versions)) {
+        var originalStartDate = candidate.dateRange.from.clone();
+
+        if (!_.isUndefined(previousResult)) {
+            candidate.dateRange.from = moment(previousResult.versions[0].timestamp);
+        } else {
+            candidate.dateRange.from = originalStartDate.clone().subtract(1, 'year');
+        }
+
+        candidate.dateRange.to = originalStartDate;
+
+        return service.getVersion(candidate);
+    }
+
+    return _.promise(candidate);
+
+}
+
+export default
+    [   'factScanDataService',
+        'lodashAsPromised',
+        function(factScanDataService, lodash) {
+            return _.partial(resolveEmptyVersions, factScanDataService, lodash);
+        }
+    ];
diff --git a/awx/ui/static/js/system-tracking/data-services/resolve-versions.factory.js b/awx/ui/static/js/system-tracking/data-services/resolve-versions.factory.js
deleted file mode 100644
index e2a21e791e..0000000000
--- a/awx/ui/static/js/system-tracking/data-services/resolve-versions.factory.js
+++ /dev/null
@@ -1,86 +0,0 @@
-function resolveVersions(service, _, results) {
-
-    function transformToObjects(versionArray) {
-
-        var converted = versionArray[0];
-        converted.versions = versionArray[1];
-
-        return converted;
-
-    }
-
-    function resolveEmpties(result) {
-
-        var newResult = _.merge({}, result);
-
-        if (_.isEmpty(newResult.versions)) {
-            var originalStartDate = result.dateRange.from.clone();
-
-            newResult.dateRange.from = originalStartDate.clone().subtract(1, 'year');
-            newResult.dateRange.to = originalStartDate;
-
-            return [newResult, service.getVersion(newResult)];
-        }
-
-        return [newResult, _.promise(newResult.versions)];
-
-    }
-
-    function resolveDuplicates(nonEmptyResults) {
-        var allSameHost =
-            _.every(nonEmptyResults, { 'hostId': nonEmptyResults[0].hostId });
-
-        if (allSameHost) {
-
-            if (_.any(nonEmptyResults, 'versions.length', 0)) {
-                return _.pluck(nonEmptyResults, 'versions[0]');
-            }
-
-            var firstTimestamp = nonEmptyResults[0].versions[0].timestamp;
-
-            var hostIdsWithDupes =
-                _(nonEmptyResults)
-                    .pluck('versions[0]')
-                    .filter('timestamp', firstTimestamp)
-                    .map(function(version, index) {
-                        return nonEmptyResults[index].hostId;
-                    })
-                    .value();
-
-            if (hostIdsWithDupes.length === 1) {
-                return _.pluck(nonEmptyResults, 'versions[0]');
-            }
-
-            return nonEmptyResults.map(function(scan, index) {
-                var hasDupe =
-                    _.include(hostIdsWithDupes, scan.hostId);
-
-                if (hasDupe && index === 1) {
-                    return scan.versions[1];
-                } else {
-                    return scan.versions[0];
-                }
-            });
-
-        } else {
-            return _.pluck(nonEmptyResults, 'versions[0]');
-        }
-    }
-
-    return _(results)
-            .map(transformToObjects)
-            .map(resolveEmpties)
-            .thenAll(function(resolved) {
-                var versionObjects = resolved.map(transformToObjects);
-                return resolveDuplicates(versionObjects);
-            }, true)
-            .value();
-}
-
-export default
-    [   'factScanDataService',
-        'lodashAsPromised',
-        function(factScanDataService, lodash) {
-            return _.partial(resolveVersions, factScanDataService, lodash);
-        }
-    ];
diff --git a/awx/ui/static/js/system-tracking/main.js b/awx/ui/static/js/system-tracking/main.js
index c1e94bd617..956b80be8d 100644
--- a/awx/ui/static/js/system-tracking/main.js
+++ b/awx/ui/static/js/system-tracking/main.js
@@ -8,7 +8,7 @@ import route from './system-tracking.route';
 import factScanDataService from './data-services/fact-scan-data.service';
 import getDataForComparison from './data-services/get-data-for-comparison.factory';
 import getModuleOptions from './data-services/get-module-options.factory';
-import resolveVersions from './data-services/resolve-versions.factory';
+import resolveEmptyVersions from './data-services/resolve-empty-versions.factory';
 import controller from './system-tracking.controller';
 import stringOrDateFilter from './string-or-date.filter';
 import shared from 'tower/shared/main';
@@ -24,7 +24,7 @@ export default
         .service('factScanDataService', factScanDataService)
         .factory('getDataForComparison', getDataForComparison)
         .factory('getModuleOptions', getModuleOptions)
-        .factory('resolveVersions', resolveVersions)
+        .factory('resolveEmptyVersions', resolveEmptyVersions)
         .filter('stringOrDate', stringOrDateFilter)
         .controller('systemTracking', controller)
         .config(['$routeProvider', function($routeProvider) {
diff --git a/awx/ui/static/js/system-tracking/system-tracking.controller.js b/awx/ui/static/js/system-tracking/system-tracking.controller.js
index 0ca55b9346..9536148a17 100644
--- a/awx/ui/static/js/system-tracking/system-tracking.controller.js
+++ b/awx/ui/static/js/system-tracking/system-tracking.controller.js
@@ -23,11 +23,17 @@ function controller($rootScope,
     var hosts = $routeParams.model.hosts;
     var moduleParam = $routeParams.module || 'packages';
 
+    $scope.compareMode =
+        hostIds.length === 1 ? 'single-host' : 'host-to-host';
     $scope.hostIds = $routeParams.hosts;
     $scope.inventory = $routeParams.model.inventory;
 
-    $scope.factModulePickersLabelLeft = "Compare latest facts collected on or before";
-    $scope.factModulePickersLabelRight = "To latest facts collected on or before";
+    if ($scope.compareMode === 'host-to-host') {
+        $scope.factModulePickersLabelLeft = "Compare latest facts collected across both hosts on or before";
+    } else {
+        $scope.factModulePickersLabelLeft = "Compare latest facts collected on or before";
+        $scope.factModulePickersLabelRight = "To latest facts collected on or before";
+    }
 
     $scope.modules = moduleOptions;
 
@@ -53,6 +59,9 @@ function controller($rootScope,
         var rightRange = searchConfig.rightRange;
         var activeModule = searchConfig.module;
 
+        if ($scope.compareMode === 'host-to-host') {
+            rightRange = searchConfig.leftRange;
+        }
 
         waitIndicator('start');
 
diff --git a/awx/ui/static/js/system-tracking/system-tracking.partial.html b/awx/ui/static/js/system-tracking/system-tracking.partial.html
index 3e75fd7a12..fa4c45c4ca 100644
--- a/awx/ui/static/js/system-tracking/system-tracking.partial.html
+++ b/awx/ui/static/js/system-tracking/system-tracking.partial.html
@@ -10,7 +10,7 @@
             <span class="FactModulePickers-label">{{ factModulePickersLabelLeft }}</span>
             <date-picker date="leftDate"></date-picker>
         </div>
-        <div class="FactModulePickers-dateContainer FactModulePickers-dateContainer--right">
+        <div class="FactModulePickers-dateContainer FactModulePickers-dateContainer--right" ng-show="compareMode == 'single-host'">
             <span class="FactModulePickers-label">{{ factModulePickersLabelRight }}</span>
             <date-picker date="rightDate"></date-picker>
         </div>