There has been a thread like this. I'm tired of telling everyone who makes up these threads that.
However, I always seem to post a comment answering the question: I prefer World at War. I like Call of Duty 4, but I haven't played enough to like it more. But in both games, people camp in places and use noob tubes, and it seems unfair because they're n00bs trying to be good.
World at War just because of zombies even though in multiplayer everyone uses MP40's like nubs so I usually just use a grenade launcher attachment if I get killed by them a lot.