Invictel hit the nail on the head with his post to be honest. You do have to focus alot more to play it and that isn't everyone's cup of tea which is fair enough, I won't beat you up over it T2D
If they do bring out MW2 maps for MW3 then that will be hilarious, surely they can't do that?! It's the same engine and nothing has changed, at least with the BF stuff it's on the new Frostbite engine and they have been brought up to speed with modern day but MW2 was only a couple of years ago if that!
I am probably going to get MW3 in the new year but only for campaign, spec ops and the survival mode. All of my friends have abandoned it now and I don't care for the MP like I did back in the day. I used to love jumping on with all my mates on MW1 and WAW but those days are gone!