I don't really know what the meaning of this post is, maybe it's just to vent my own thoughts about the battle of the newest Canon and Nikon Bodies.
I think there are two kinds of people, which is also true in photography. There are the gearheads and there are the photographers, and everyone is somewhere in between those two, some closer to the middle and some more extreme.
Everyone who is a bit towards the gearhead category does tend to look a bit at numbers, reviews and tests before purchasing anything. I myself is a bit towards the gearhead category, but what can make me very enthusiastic about a piece of gear is seeing something made with it. If I see a lens makes great photos, then that is more important to me than looking at MTF charts etc.
Everyone has to admit that the D800 sensor is a great achievement in resolution, and performance. Especially in low-ISO, but everything taken into account also in high ISO settings.
Why did I end up with a 5D mk III then? I mean DxO numbers are one thing, I truly don't give a damn about them, if only the photos that I see from the camera are pleasing to my eye. The 5D mk III does that, I also think the D800 does it, however I don't NEED the more resolution, I wouldn't mind having it. However I do value the burst speed and a (in my eyes) better focusing system.
I'm sure both cameras are going to produce great results, just choose the one that suits your needs best, that is the 5D mk III to me. Even though I would have liked the same specs with the D800 sensor, but that is just not going to happen just now.
Anyway, wether you're a gearhead or a photographer or anywhere in between, don't waste your time trying to convince the internet that you are correct and everybody else is wrong. Chances are everyone (including you) are both right and wrong. The "best" camrea doesn't exist, it's all about compromise to get to what camera comes closest to your needs. And to be honest, most peoples needs are adressed by multiple cameras.
Now this is my one and only post regarding this matter, I wanna get out in the sunshine and enjoy my 5D mk III, I hope to bump into a friendly D800 owner for a little talk about what we're capable with our tools