We had a second look at our results and we can confirm that we didn't mix up the measurements.
We also had a closer look at the other measurements published on the websites you mentioned, and even if some graphs show some strange patterns, they seem to all agree on the better quality of the Mark II.
So, if there is a consensus that the Mark II is better than the Mark I, the only explanation would be that we measured a bad sample of the lens, even if it was brand new.
So, we will try to fit another sample of the Canon 70-200mm F/2,8 IS II in the lab schedule, as soon as we can get another sample.
Axel from DxO