It is easy to compare two completed test instances using our Compare Instances functionality, which can be found on the Overview tab of a Test Result.

1) Sign in & navigate to projects: https://alt-us1.apicasystems.com/projects or https://loadtest.apicasystem.com/projects

2) Click on the project you are working with, expand the desired Test Instance inside, and select the desired Test Result as shown below (you will be comparing another Result with this one):

3) That will bring up the Test Result Details page. Click the Overview tab at the top (to the left of the current tab, Result Details) to go to the Overview. Now click the "Compare Instances" button:

You can select another Test Result from any other Test Instance to compare:

Hit the Radio Button then Apply. You will now be able to compare stats such as Statistics and Page Response Times:

Note that for Page Response Times, you will have to hover over the graphs to see which is which like is shown in the screenshot.

Happy Load Testing!