blizzid on 13 February 2009
I think the full lists NPD provides to companies has different SKUs listed separately. That would cause something like GHWT to take up multiple slots, but those slots would be outside the top 10. GoW2 could then make the top 10.
At least, that's my best guess for it. There were mistakes in the NPD list this month, so who knows. (Mario Kart DS was listed for the 360 instead of the DS; Lord of the Rings: Conquest was listed for the PS3 instead of the 360.)
