I do get your point and understand it. Having better grain/DR at higher ISO is always welcome. It certainly is.
However I would prefer higher resolution/mp in most landscape or product photography situation.
Please compare two photos, one with 22mp and the other with 40mp to see the difference.
Yep, and I get your point about high MP. Having both capabilities would be a potent combination.
As a current 7D shooter, my first goal is reach FF. And after several lengthy post-process sessions with DxO, Nik, LR, PS and my NEC wide-gamut to disassemble then reassemble low light shots to dump noise (and there is plenty in the 7D), I am really gun-shy about anything with potential noise.
So for that reason, I do hope that if Canon does come out with a high MP monster - that it has reasonable low light performance. Otherwise there are many options for high MP later. Its good to see Nikon at least dare to enter Digitial MF territory with a DSLR format even if I remain wary on this first attempt.
For now, I think the 5DMIII will serve me well in the Landscape area