The important comparison for me would be with the 1D MkIV. I've toyed with the idea of grabbing a MkIV for BIF shots with its crop factor and AF/high ISO capabilities. The 7D MkII appears to be able to hold its own against the 1D MkIV at 6400ISO. The MkIV has a slight edge in contrast, maybe. But the price difference between a new 7D MkII and a used 1D MkIV really is making it a no-brainer.