Re: The *vast majority* of the performance difference came from the IMC.
Now you're just arguing for the sake of being argumentative. You do realize that if you're right, it would mean that a Core 2 Duo with IMC (what we already know is going into Nahalem) is going to increase Intel's performance lead by your absurdly high estimates (and that's not including any other enhancements most likely going into the core). Such a product would drive a bullet right through AMD's head.