Michael Johnston at The Online Photographer reminds skittish Canon owners that they can step back from the ledge because the relatively poor DxOMark image quality score of the new 5D Mark III really doesn’t matter:
This has resulted in a whole generation of photographers who have been constantly reinforced in the notion that “image quality” is an essential building-block of a successful photograph. Actually, it isn’t. Actually, it isn’t at all. One can find examples of anything, and I’m sure you can find examples of photographs that “work” primarily because of resolution or color accuracy, but most simply don’t. You could also find examples of just as many photographs, if not more, that work primarily because of poor image quality or lower resolution or color inaccuracy.