I've played BC2. It's extremely fun, and more balanced than Call of Doody, but my big thing with Uncharted 2 is the fact that you don't start as a certain class. Your doing well depends solely on how you use the weapons you find, and how you deal with situations that you face. That, and pulling a guy down off a ledge to his death is the most satisfying thing in any multiplayer game ever. EVER.