Yeah, not a fan of the games Treyarch develops. Call of Duty 3 was different than Call of Duty and Call of Duty 2. The engine wasn't as smooth, the textures weren't as crisp and everything just felt not as good as Infinity Ward made it. As for the graphics right now for World at War, hard to say since it's in beta so it could change for all we know.
As for the weapons being too old, eh. The BAR and StG.44 ftw.