Thanks for your interest in DxOMark.
Please have a look at our title for this part : “Canon EOS 6D versus Nikon D600: IQ of D600 is slightly higher”, I think we agree
For the first part, we tried to compare some lenses that should provide very close optical results on both systems. That is why we did not mention the Nikon 85mm but the Sigma 85 and 35mm.
The DxOMark team