The phrase "comparison test" refers to a method used to compare two or more things to determine their similarities and differences in order to make a judgment or draw conclusions. Full definition
Whether in comparison tests, on the race track or in everyday use, it has traditionally set the benchmark in the sporting compact segment. (topspeed.com)
That car got heavy use, being a favorite of our video and photo crews and a perfect chase vehicle when doing comparison tests of other cars out in the desert. (automobilemag.com)
It even won a blind comparison test with the iphone 6 +. (9to5google.com)