you can spin it however you want:
* if you think this information is useless, don't pay any attention, I'm sure you'll fine lots more fun elsewhere
* if you think it's an imperfect indicator of how well they're selling, and for any reason you're interested in this: D800 still 5th, 5D3 slightly up to 15th
my motivation for following this is:
* given how passionate many people feel about this, it's a fun fight to watch
* I will buy a full frame body in the coming weeks; with today's prices it would be either 5D2 or D800, the 5D3 is not an option since I think it's a lot worse than the D800 and more expensive too; but history says that when there's a simultaneous release with a clear loser that's also overpriced, in 3-6 months the price is adjusted to make it more palatable (see D700<5D2 and 60D<D7000)
Well this professional is clearly choosing the loser of the two cameras as you so adequately put it... because it's AF, compared to just about any other camera out there, is, clearly, loser, so is the ISO, so is the 100% VF, so is the weathersealing, so is the frame rate, because, you know, afterall the D800 can do that with the optional battery grip, oh wait, that's not shooting full frame? Crap, well if dual slots, yep that's a loser, HDR, customization, ergonomics, better all around camera, better DR and IQ past ISO 800... yep why would ANYONE choose the 5d3 over the D800? **crickets**...
btw, just so you know, the D800 is also weather sealed, AF focuses with f/8 which others "superior AF" can't do which means its AF will keep working in low light when the "other" stops, also offers 100% VF, high resolution face recognition RGB metering vs not, also offers dual card slots, has HDR and 9 bracket options instead of 7, better intervalometer with direct to .mov option, and identical on higher ISO's resampled to 22MP, crop video modes, 4:2:2 HDMI out, excellent ergonomics. So let's get that out of the way. 5DMKIII has better specs in *some* areas, but it ain't the be all end all of DSLRs. Neither is the D800 but it ain't trailing anything either, just saying...
Yet both of you are going in circles. Is big MP any more pointless than big ISO if that's not a priority for the photographer? no. Is high FPS any more useful if one doesn't need it? no . are 2 FPS either way going to make THAT much difference? hell no. How many people who need to shoot fast FPS aren't better served with a 8 FPS ready D700 instead for a fraction of the cost and that will smoke anything south of a 5K dollar camera? Likewise how many people really need ISO 100K or even will use it. Or how many people that get 36MP will end up needing it.
Ultimately, there is no such thing as better all around camera for everybody. that's a load of crap because the better all around camera depends on what you shoot and the answer changes based on that. What camera is the more versatile depends strictly on what areas need versatility versus what areas is trivial. Neither camera to date does it all better than the rest so why argue such idiotic thing as which is the "best all round camera". It's silly at best.
So please let's stop pretending that suddently the hallmark of versatility is a mere 6fps when flagships or even older DSLR smoke that and have for years not to mention all the great images achieved with the "SLOW" 3.9fps 5DmkII. Likewise let's not pretend the apex of versatility is having 14stops of DR and the ability to crop 1/3 of the image and beat other cameras in detail when there are these things called zoom lenses and HDR. Even meidum format.
You use whatever works for you, and that is the most versatile of YOU period. If a mere 2fps or 14MP sway you on either direction then clearly the other camera wasn't aimed at you. But it says nothing about how much of a better fit it will be for somebody else.
There isn't a loser or winner camera (well except if amazong is the official score keeper). It's just at tool. Is a hammer a loser because it can't do the screwdriver's job? Is such an argument better suited to 6th graders than grown professionals?. I think so. Let's mature here a little people.