Actually it depends on your taste for different game types of the FPS genre. MAG is going to have huge servers capable with 256 players...the game is much more strategic with objectives to defend/destroy....much more focus on tactical gameplay and working in teams rather than the actual shooting elements and graphics. MW2 on the other hand focuses more on being action packed, fast paced and an overall better shooting gameplay, rather than being strategic. And we all know how great cod4 was, with its short but high quality campaign and the exciting MP with perks, different locations and range of guns with attachments and camos. Im sure IW are going to build on this, making improvements and added features where ever they can. And im sure special forces is going to very exciting. Thats why i know MW2 is going to great and thats why im choosing it over MAG...