Because the 5Diii samples are reminiscent of the 7D as has already been explained???
C'mon you guys...a few awful pics with god-knows-what settings and processing and you're all experts on what a new camera can produce?
Despite all the nay-saying I bet that in a few months time there will be thousands of professional and competent amateur photogs getting stellar results from both the 5D3 and the D800...
All this angst about a camera that none of you have used is kind of sad...but even more sadly, I, like a few others, are drawn by some masochistic impulse to look in on this thread from time to time to see if anything constructive has come up. It probably has, but I just can't be bothered wading through all the BS to find it!:p