MakisM1 wrote in post #16786848
Here is a 5 min attempt to compare a jpeg produced from the DPReview RAW for the 5D3, with the 6D jpeg downloaded from the DPReview site (not the ACR jpeg).
On the top is the 5D3, per my action at 100% crop.
On the bottom is the 'stomping' 6D.
Admittedly, I allow a bit more noise than most on my 100% crop.

Which one would you prefer to have if it were your photo?
...and yes I can give the 6D the same treatment with very similar results, but I leave it as an excersise to the reader...

Gerry, just like I explained it to Lukas in another thread, the camera that starts out with less noise will win even after processing both. Not that the difference in unprocessed RAW is huge between the two, but still, the end result will mirror the initial difference between the 2.
Both the 5DIII and the 6D use relatively heavy NR in their high ISO SOOC jpeg to achieve low noise. Consequently, some detail is lost in the process, that's true for both the 5DIII and the 6D.
But obviously most serious photographers shoot in RAW and process their files how they prefer tailoring them to their needs.
I mean, no offence, it's just I'm not sure if I understand the point of comparing your processed 5DIII RAW image to a SOOC 6D image. Smearing the detail in a high ISO jpeg is not a 6D specialty, all modern Canon camera's do it, from my 70D to your 5DIII. And I don't know what to do with asking me which one do I prefer. I mean one is a SOOC jpeg, the other is a processed RAW. If I saw two identically processed RAW files, one from the 6D and 1 from the 5DIII, then I would feel that there is a point to compare the two. It's just I'd never shoot jpeg at a serious photo shoot, so I don't know what to think of it when asked to compare it with a processed RAW.
I know, all this above sounds confusing 
And you're right, I could do my own comparison by downloading the RAW files and processing them myself, maybe I'll do it tonight. I usually apply a different approach and use less sharpening and end up with less noise too, but we're all different, with different tastes.