Not such a good DxO score as we were led to expect.
Mikael, what are your thoughts on this?
Have a look on the charts. It has some disadvantages only in low light ISO DR, the rest is just as good as the D800 or D4.
Besides I just had the opportunity to try one 1D X last weekend, and I can tell, that this beast has an incredibly superior AF compared to anything which I ever held in my hands (including the 7D, 1D mkIII and the 5D mkIII also).
So maybe the sensor could be better, but even this way, this is the best DSLR out there at the moment.