Review.
To test this:
# Start a game
# Enable profiler2 and the HTTP server.
# Open 0AD/source/tools/profiler2/profiler2.html
# Click on the top-most button "save report to file".
# Click on "Choose File" below the title, and select [log folder path]/profile.json
# Marvel as you have two profile reports open.
# In the analysis section, on the Choices tab (which should now list various stuff such as "MakeGoalReachable"), click on one.
# In the very bottom, you should see "Report Comparison". It should make sense. Before it didn't make sense.