I'm probably not the best representative since I have not been able to play its multiplayer extensively. But from what I tried it is a YAY. I enjoy it, I do not mind the faster more responsive controls (barely ever played KZ2 multiplayer cause I didn't have the time back then). Do not expect it to be as fast as BO though.
If you enjoy class-based multiplayer games, then this will be solid. It's failry balanced from what I have seen, the maps are great for all styles of play, and it implements a reward system similar to COD which you are probably used to.
I wish I have the time to sink in more hours into it, but there is always the "next big thing" that hits the store shelves that takes my attention from the extras (multiplayer, side quests, trophies, alternate endings, etc) from the current game I played.
If you played the beta and enjoyed it, then the full version is just more of that. You can't go wrong. It also has a healthy comminuty that will stick around for a while.
