Looks basically like what would be expected of a 20MP FF sensor with Canon's current tech.
The detail is slightly less than the 5D3, but that's expected since we have lost 2MP compared to the 5D3. Likewise the noise is slightly less on the 6D, which again is to be expected given the larger pixels.
To be honest, I wouldn't chose one camera over the other based on this difference in noise performance or detail/sharpness - any real world differences will be small at best.
I'm getting the 6D soon, and really all I wanted was approximately 5D3 IQ, the loss of other usability features is to be expected given the price - but at least the IQ is on par. And I am looking forward to that ~1.5 stop improvement over my 60D!