I own both and honestly I have way more call of duty games than battlefield but I feel like Battlefield 3 wins the multiplayer game over MW3

I do enjoy the story mode and as much as I enjoyed BF3 campaign I enjoyed MW3 a tad bit more. I'll still play MW3 because I have a lot of friends that play it and I want to hit level 80 doubt I'll prestige though but if I had to pick only one to play online it would be BF3