How high can Gears of War 2 go in it's first month NPD? Can it top Halo 3?

[Spankey]

Sure GeoW has a bigger install base to work with, so i'll bite.

But also, I'm not 100% sure that GeoWis as popular a franchise as HALO is.
A lot of poeple that i've talked to (hooray for anecdotal evidence!) have definately heard about HALO but don't even know about Gears.