>>3982241>>3982245That's not true at all. I've shot many systems and noise levels remain the same as long as light is good. Smaller formats will have less detail in lower light situations, but even there, noise patters will look the same.
Even in the case that it was true, so what? Will 400 iso instead of 200 iso ruin a good photo, or make a bad one good? Can you even see the difference between 800 iso and 400 iso?