Upload & Sell: Off
As far I remember, Sony is even much bigger than Canon and Nikon, right? Does that mean they are superior in photo gear? That would be new to me. :-)
But anyway and again (yes I know, again and again and again: I am a fanboy): Nikons first (and imo only) time, where they overcome Canon in DSLR competition was D3X. Not a great result for 10 years now. Based on specs D4 is just another try of "we too" again. But I believe when I see what 1D X is able do deliver. And the good point: First Time Nikon offers a (til now) better price.
I really wish, Nikon will do better with D800. We will see, if/when it will be released. If it will be with the given specs to me it is a nice body and a good adon to Nikons high consumer/semipro line, that will make it΄s sales. Not interesting for my needs so far (again), but it could bring D700 prices down to 1000 soon, what I could imagine to pay for it.