I have both games and I enjoy both of them very much (not as much as skyrim). Battlefield is much more team based game and I find that the pace depends on the class that you are using as well as the map that is playing. MW3 is a good game but to me it didn't meet with the standards that was set by MW2 and the disappointment of Black Ops. It is fast paced, it does seem more solo based, and playing online can get frustrating. I can't say one is better than the other because I enjoy both and alternate playing.