I believe if you'll look back at my post, and my post over on POTN, you'll see that I want(ed) the feature set of the 70D on the 6Dxx. I didn't say anything about the 5D MkIII as a reference.
There will be a 6Dxx inside 24 months with 90-110% of the feature set of the 70D on a FF sensor. It may not be called a 6D xx, but it will be the next evolution of the 6D.
I don't need the 6D because I don't have to have FF right now, so I can wait it out. Indefinitely if need be. I'm just betting that I won't have to wait that much longer and in the mean time, I'm very pleased with my upgrade to the 70D, which would fine in the hands of 90% of the people that frequent this forum anyway.
I still may buy a 6D. My local dealer got his shipment in today so it's tempting. VERY tempting. What I'm stressing over right now is that glass loses very little value. Cameras lose value quickly. I just have to decide if +-24 months of having a FF is worth what I'll gain (quality-wise) and lose ($-wise) over the period. I think I'm talking myself into riding to Raleigh tomorrow. Gee, thanks a lot.