That is a question that everyone have,who is best. Well,we can't say yet who is best because no one have played mw3 already, but we can play now BF3. I didn't played BF3 yet,just saw some teasers and gameplays and man, In my opinion,doesn't look so great. The maps are great and big as usually but I didn't saw anything new, nothing really atractive.MW3 will be a great game as it looks,the single player have some inovations as it looks and the multiplayer looks awesome as usualle to 8D Anyway,is better don't get a final conclusion yet,I think is better wait some time to have a preference. See'ya around buddys