yabokkie: iso has nothing to do with photography nor image quality at certain exposure. iso exists for chemical developments and digital calculations at a lower level. it cannot tell you how the output image may look like without knowing the format first thus totally unsuitable across different formats. iso only explains unit area, no more, no less.
The DPreview comment section is one giant community forum of phony photographers who argue over cameras and photo quality. It's sad and funny. But mostly just sad.