Sounds promising. I really liked certain aspects of what they did with the gameplay mechanics in Far Cry 2 and they seem to have continued on in that direction.
Might be a very subtle effect. Seems to go by other reviewers. I got the same feeling of a very slight slowdown in Far Cry 2 as well sometimes, but that might have been all due to change of pace in the music score. Will certainly try this one. Black Ops 2 feels quite crappy so far.