I can't tell the difference, I gave up guessing midway through the test because I was just picking at random, unable to see anything. Although I think I might've seen it in the more fast-paced ones, like with the racing game.
I also think it's probably a lot easier to see when you're actually playing the game yourself. But then, I remember that I played Bayonetta PS3 and did not ever think "man, this framerate sucks".
Also, while I'm sure most people here can tell the difference, topics like this are always going to be biased towards those who scored "high" because the others will be less likely to report their scores.