Battlefield 3 VS Modern Warfare 3?

I think BattleField 3 is way better. HOwever MW3 will crush BattleField 3 in sales. WHy: Because Call of Duy has a bigger fan base. Many annoying little kids will also buy MW3. Im thinking about buying BattleField 3 because MW3 doesn't have zombies : ( anyways I have COD Black Ops and once MW3 releases I know many people will still play Black Ops online. Also what really annoys me about COD is that lately its been the same engine just different paint. I loved cod1,2,4 , however the rest were just okay, nothing new. BattleField 3 will have more vehicles which Im excited about and their gameplay and multiplayer will be amazing. Overall I like both series, but it will ultimately come down to which game my buddies will buy and which ever one they buy thts what Im getting so we can play on xbox live. They both look great Im just skeptical of tht repetitive cod gameplay