If my memory serves I was the only one present who'd used both cameras, and had 10 years experience of Canon sensors before going to Nikon's D800, of which I have over 2 years experience, using it every day.
Well it doesn't serve you correctly because there were at least two people involved in that discussion that have used the D800. To assume that those on CR are arguing from a position of ignorance is disingenuous to say the least.
The video posted by the Russian guy is typical of the comparisons in image quality between the 5DIII and the D800. The 5DIII is consistently underexposed compared with Nikon and then heavy shadow areas are lifted to above mid tones and the two compared. I never
have to lift shadows anything like this and therefore have no issues with any noise that might lurk beneath. As you like oblique comparisons lit's like saying the paint work on a Rolls Royce is crap because of the undercoat they use.
I'm about to have a D810 land at Building Panoramics for me to try, it's going to have to offer a lot more than the D800 before I would be interested. In my opinion the low ISO image quality from the latest generation of FF cameras is simply stunning, and the extra DR offered by the D800 was not enough on its own to make me want to change. Look at the tonal graduation on the Canon, see the graduation into high and low light; it is as good as the best of film, as good as, if not better than the Exmor.
I will say though that I found it easier
to produce the sort of images that I make on the D800, but that is not enough to make me want to change. Bear in mind that in any sort of photography where you are producing relatively few images, there is inevitably a large amount of pp anyway. If you want to shoot landscapes as jpegs off camera the D800 is the way to go, but who wants to do that ?
But what puzzles me is why you have kept following CR. If you have been enlightened with the Sony chip why bother ? Or do you have a nagging doubt that maybe you haven't done the right thing ? You've spent $12,000, changed systems and well, was it really worth it. What's going to happen with the next generation of Canon sensor ? What if soon there will be a Canon chip where I can lift underexposure five stops and still have the superb ergonomics that I now miss so much ?
Just one last point; I'v seen a few pictures that Neuro has posted here on CR, shots of his kids in a make shift studio and they are every bit as competent and impressive as the best of your studio work that I have seen on your website.