dilbert, there's an implicit assumption in your comment: you assume that everyone's shooting needs and style are comparable to yours. Many people rely on AF which has generally been superior in the Canon line. I've not used the D810, but most reports indicate that it's much improved. This should tell you that even Nikon shooters wanted better AF with their Sony sensors.
For someone who shoots moving subjects and relies on AF, no amount of DR will make up for it.
For someone who shoots still life, landscape, architecture, etc, no amount of AF or DR will make up for lack of needed lenses.
Do the above statements reflect your personal experience with photography?
Or did you canvas other people?
That depends on what you mean by "canvas:" I've read plenty by sports photographers, both pro and amateur, who rely on AF, and could not do what they do exclusively using MF. I've read a number of pieces by landscape and architectural photographers who refuse to leave Canon because of the quality of Canon's TS lenses, despite their acknowledgements of the advantages of Sony sensors. Have I actually run a scientific survey of these different sub-disciplines? No, of course not. Am I relying on my own personal experience? No, I'm relying on what others have written about their needs and experiences.
Question to you, dilbert: do you ever shoot moving subjects? Do you MF everything?Of my last 3 outings to take photos totalling 7 days of photography, MF comprised 100%
Then AF has little value for you, and you should choose a camera system based on other criteria that match your shooting style. My guess is that you're very unusual in this regard, and most people use AF quite a bit. While I don't have direct evidence for this, it's a reasonable inference based on the fact that every major review of a new camera body will spend substantial amount of space discussing AF. Also, as I noted above, the Nikon D810 has a much improved AF system over the D800, which wasn't bad. This also implies strongly that "the market" is full of buyers who want AF.
I certainly will not say that the desire for more DR is invalid -- I'd love to have more of it in my Canon bodies. However, it's not the only factor, nor even the primary factor, that makes an image a "keeper." For a minority of photographers, possibly including yourself, it may make the difference between an image you like and one you don't.