I'd say Halo3 moved somewhere between 0 and 528,000 360's in the US. I think it's impossible to really narrow it down further than something like 100k-400k. You also have to consider whether to count systems sold to repeat buyers. Of course a system sold is a system sold but it would affect future software sales and it further lowers the validity of the claim that over 3 million Halo fans were just waiting for Halo 3 to buy a 360 (well, if that claim can get any lower after only 200k increase in sales). From here on out it will only get more difficult due to the chicken and egg element here. Is someone buying a 360 and Halo 3 in January buying a 360 because of Halo 3 or is he buying Halo 3 because he bought a 360?







