for a video review by videographers, go to Phillip Bloom's site.
he fairly exposes the flaws on the 5DIII and why it isn't the best video dslr because of its soft output. Likewises he looks into the D800 and concludes it does a lot of things better but also has a few flaws. Yes the 5DIII is better for low light, but to put a blanket statment that it is better all the time would ignore that the D800 edgest it out on detail and uncompressed footage option.
there is not such thing as a "win" for either camera. it is just a question of what matters to you. If you shoot motion, nature, details, the D800 is the way to go. If you shoot a lot of dark footage, 5DIII will be better suited. As Bloom concludes, neither camera scores a win overall and yes he is a videographer, and a canon videographer so he should know right
lastly "some say" doesn't mean anything useful. Having actually used a D800, I guess I'll be part of the "some" that say it feels great, as good as the 5DIII. So there, "some recenly switched to nikon guy" just contradicted "some other nikon guy with a D3x" That's the problem with obscure anecdotal evidence of "some guy" who is a "friend of a friend that knows some guy that told him".
Don't put weight on such silly comments. They are best taken as noise.
you’re leaving out a lot of his opinions in your summary.
Like the ‘unusable’ (his words) level of moire in the D800 images - the fact that he had to stick in a custom, 3rd party AA filter into the D800 speaks volumes of just how bad it is. Or the fact that the D4 only has good output in 2.7x and not the usable FX and DX modes.
Or the fact that he’s also completely enamoured with the 5D3’s output AFTER its’ been sharpened in post. Anyone who has actually seen the video would see he the 5D3 files a lot for the mileage in post it gives him - sharpening without return artefacts or moire.
If you’re out to inform people, the least you could do is give a completely summary - an incomplete one is probably as devastating as those comments you classify as noise.