CR Forum Logic.
1. 5D2 IQ = Praiseworthy, even today. (general agreement)
2. 5D3 IQ > 5D2 IQ (general agreement)
3. 5D3 IQ = unsatisfactory
Prior to the 5D3 and 1Dx, we had lots of forum posts/threads of how Canon shouldn't chase high MP sensors any longer - who needs more MP! Canon should focus on better high ISO performance. Nikon is winning in high ISO performance we say. Then Canon do exactly that by keeping the MP down and improving high ISO performance in the 5D3 and 1Dx, but Nikon releases a MP monster. Now we complain about not having a high MP camera.
Most of you seem to feel that if Canon doesn't provide you with exactly what you want, then they don't know what they are doing. Markets do not equal 1 person. Canon is building products for markets, and you may or may not fall into the target market for a product. And, at any point in time, Canon may not offer exactly what you want in any product. But, that does not mean Canon is stupid and Nikon is brilliant. You (what you want in a camera system) may not be part of a very sizable or profitable market. Not a happy place to be.
For me, the 36MP sensor with poor ISO performance at the high end is useless - I don't care how good the dark shadow detail is or how many stops I can push it in lightroom. Others feel the opposite is true (for them).
Objectivity is not a strong point in CR Forum logic....