That's ridiculous, you can notice up to 120 FPS and more. That's why they make PC monitors that support 120Hz. Go research it if you want to know about it because I'm not interested in arguing it.Because extra 30 FPS you are not physically capable of seeing makes a world of difference.
You should've also read to whom I was replying. The whole point of my post was to say that you can't compare how powerful a GPU is with games without equal graphics and also without an FPS counter.