Activision has COD4 at 1.5 million X360 + .44 million PS3; GH3 1 million on the PS2 and .42 million on the Wii. Combined with WoW they're going to dominate all the important platforms, all they need is a good game on the Wii.
Indeed it's a fairly successful 4th quarter for them. They might have gotten a better deal out of the merger if they'd waited until q1/q2 2008.