Yeah, World at War (Treyarch), wasn't as fun for me as MW1 (Infinity Ward). And the way that MW2 ended up, had to have been the result of Activision putting their foot down. IW has historically been against things like no dedicated servers, and with all the glitches in MW2, it had to have been rushed out as well.
Glad I skipped MW2, but still sad to see IW getting crushed by Activision. Activision sure likes to ruin franchises (Guitar Hero, Tony Hawk, now CoD). Good thing for them that they have Blizzard and WoW though, otherwise they'd have nothing.