My eyes are really bad. I just got the PS3 version so I'll see if the FR is unplayable soon.
My eyes must be as bad. Honestly, i watched the gamersyde video now like 20 times on the PS3 and my HDTV (for some reason it plays very choppy on my PC) and framerate hickups are noticable for both versions, especially when he's jumping down.
What was obvious thoug were the shadows on the PS3 version looked a tad better, at least there was less shadow flickering visible (when camera rotates the tower, looked a little bit strange on the 360 version, so it might very well be a graphicala glitch).