It has been proved that the human eye sees around 25-30fps as fluid movement, the only way to test it is have 2 movies or games one running at 30 fps and one running at 60, the tester has no idea which is which and they have to guess after each have been tested.

You used sonic generations as an example, but you knew which was running at 30 and 60 therefore your own personnal test was invalid also it was not in a controled environment, I have known huge framerate drops on PS3 and there is no way to check if it is constantly running at 30 fps. If the game had a drop in framerate you will have thought there was a differance when it was actually running at 15-20, which would show lag.

You cant just play the same game twice and say there was a differance, because the differance wasnt 30 vs 60 fps. Also the limited games have to be running on the same hardware, or the hardware could be to blame.

Sorry but you are wrong thank you good bye, btw a pidgeon sees movement as 150 fps, so maybe you are a pidgeon and they are both slideshows.