Mroe to your point, it seems some games' control behaviour are more affected my framerate than others of the same genre.
This is true, Crysis feels silky smooth to me at 30-35fps. I've been playing the original Call of Duty lately though, as well as newer games Borderlands and Modern Warfare 2, and the newer ones just feel soooo sluggish by comparison to CoD at a locked 60fps.
CoD being a PC exclusive and the others not might have something to do with it.
I just bought Ghostbusters in the Steam sale and KBM control in that game at anything below 60fps is a freaking terror, I ended up switching to my Xbox pad.