@Selnor
I think you should refrain from talking of technical issues you don't know much about. There's no such thing as "general purpose threads" or "single algorithm threads".
And your "Unreal E 3 is not designed to fully optimize Multithreading" personal opinion (based on what?) goes in the face of real facts as stated by the engine developers themselves and many other developers who have used it.
Alan Wake will do what UE3 does: it will use a thread for physics, a thread for rendering, a thread for data streaming, and run each one on a separate core. Maybe it will do it better than Gears, maybe it will trump any UE3 based game, but it is nothing qualitatively different.
The fact that it will have higher requirements CPU-wise than Gears of War on the PC is only natural for a big-scale world with heavy accent on physics.
