They are certainly glowing about it. I love mine, but felt that the higher contrast tended to make the image appear sharper. The greatly improved middle and outer edges also make the overall image look a lot sharper. I believe there is less CA's, but it wasn't a issue on the MK I.
I've seen your tests, and they seem right to me, there is always lens variation, but they are as expected.
One interesting thing is that the lens center MTF is always highest wide open, and the edge MTF increases very little as you stop down, while the center MTF goes down a little.
It is still excellent at 400mm, where I would use it most, in fact, I have only used mine at 400mm, so maybe I should have went for the DO.
Roger at Lens Rentals tested 4 each with his new transmissive target. He just looked at 400mm so far, but did not measure much difference between ver 1 and 2 in the center. He does warn that he wants to test more lenses to get better data.