He's just being an a&&hat. I have a Core I7 920 and fully expect to be able to play this game. 3GB dual core should be able to with good graphics card. But mainly I wouldn't ask just keep checking, at some point they will post the recomended specs.
I have a core i5 650 processor, Radeon 5450 graphics card, 750 gb hard drive, and 6 gbs of ram and if that cant handle CoD BO, i'm gonna hang myself cause i also have a wii but i believe im gonna get a better experience on pc