See the following article in Spanish:
http://www.guillermoluijk.com/tutorial/noisedr/
(Google-translated English page here)
The Signal-to-Noise Ration (SNR), Level of Saturation (for 12-bit Vs 14-bit), Dynamic Range (DR, in EVs) etc. are measured. This is an interesting read (but maybe a bit more difficult) and the comparisons are made on the same methodologies and bases.
Related:-
K-5 Scores the Same DxOMark as the 645D!
Falk Lumo Tested the D700, D5000 and K-x
K-x' DxO Mark is Out