Just for the record Reggie said:
"Modern Warfare 2 is on two platforms. On a single platform...absolutely. I say that unequivocally. On one particular platform, I do believe so. You've got to give me the entire holiday selling season, so let's take it all the way through the January NPD data. ...It's going to be close. Modern Warfare is a a great title. As a gamer, I look forward to it. The new Modern Warfare, I think is going to be a fantastic title. Not to discount it, it will sell well. Of course I'll play it...I play all the content out there." - Reggie Fils-Aime
I wonder which HD console he will play it on?
Could be on the PC but I think he will most likely play it on a console.
Either way I say NSMBW will very likely outsell MW2 in America, world wide and both HD consoles combined LTD.