I agree the pattern noise problem is gone - there's no evidence of it in the low-ISO images, which was where it was always most evident.
It's also blurred to oblivion with NR.
Again, also blurred to oblivion with NR. You can do the same thing with the 5D2 and achieve similar results.
No, just that the NR they've applied seems to be 1.5 to 2 stops stronger than what you'd normally use. Sure, the noise is gone, but so is all the fine detail.
Blurring an image to score well in ISO test's is cheating imo