Lord N on 06 December 2009
Halo itself isn't a system seller, and neither is Gears. Both of those games were released during or in the months leading up to the holiday season. Had they been released in April or March, then their effect on sales would have mirrored that of GTAIV. GTAIV was a much bigger game, and its sales effect wore off after 2-3 weeks.
Consoles owned: Saturn, Dreamcast, PS1, PS2, PSP, DS, PS3
