Gears 2 will do 2.5 mil first week worldwide

[WiiStation360]

Gears2 should be the 3rd largest 360 launch.  I doubt it can come close to GTA4, but you never know.

XBox 360 Top 10 Launch weeks

1 2 3 4 5 6 7 8 9 10

Halo3 GTA4 COD4 Gears of War Assassin's Creed Madden 09 Madden 08 Guitar Hero III Madden 07 Rainbow 6 Vegas 2

3,815,444 3,338,629 1,091,001 910,931 821,416 720,697 711,258 665,846 625,461 614,242