I played COD for a bit, right up until everyone would run around with .50 cal sniper rifle and quick scope people. That and the ability to fly up a flight of stairs and knife someone really killed the game.I know the got rid of the knifing issues but kept the quick scope for the new one. The maps were way to small, IMO, and would turn into essentially a nascar race with guns. People running in circles. The new one looks like a $60 map pack expansion with tweaks on the kill streaks. It is the same game graphically since COD4. Hey they are making a shit ton of money so why put a new engine in it.
Like I said on the Beta they scaled down all the graphics and textures and did not give us any vehicles or a lot of the destruction. So I am guessing a lot does not need to be changed in the full game as it would just be added back in. I mean there are two disks, one where you just download all the HD textures. The issue I have with BF3 is that it is a PC game scaled down for consoles whereas MW is a console game made for consoles. I like them both but for the money I will buy battlefield and probably rent or borrow MW3.