Meh, is Mark III's sensor is anywhere near as good as D800's (DR, noise) I would have got one in a heart beat.
~At the same time someone is posting at Nikon Rumors..."Damn, if the D800 had the AF and high ISO or even was close to the 5D MKIII, I would have jumped at it."~
It's not really surprising; let's ignore the image quality for a moment. People buying the D700 over a 5D2 were those who wanted a more well-rounded product, those like me who chose a 5D2 were prepared to sacrifice AF and speed for IQ (or at least pixels...).
Suddenly the roles are reversed, the 5D3 is a very well balanced camera more fit to replace the D700, while the D800 is a more specialised one that I see more in line with the 5D2 (high IQ but slow, even though the AF is much better on the D800 than on the 5D2).
So while threads like these tend to be much longer than makes sense, I can fully understand a bit of confusion due to this role reversal (and then there's the "other" role reversal that some people like to tout, the one that Nikon generally has overtaken Canon in the sensor department; which adds even more confusion when every thread about one of these aspects is immediately hijacked into a big mush of all possible comparison points-of-view).