Bought this game yesterday, played it only online...
It's okay. Looks very nice, but the gameplay suffers from it... it's no where near as smooth as Black Ops. Also, after a couple of hours it got very repetitve. Everyone was using the same gun... and there's only one decent assault rifle to use.
Is it better than Black Ops? IMO... no. It's copied a lot of aspects from it, but the game play is just too jagged.
But it's a good game and fun to play for a while. The maps are very good. It just kinda seems like, you kill someone, and then someone kills you pretty much instantly. Not sure if thats due to spawn points or something... will keep playing to find out.
Looking forward to trying the single player.