Isn't it the same with all Cmos sensors vs. CCD sensors? I've find that the rated ISO value with CCD sensors is best used only in the studio with strobes, for "general" photography (like landscape and such) CCD sensors are best to be half to one stop underexposed for best HL DR... OTOH, you may notice that with Cmos sensors the HLs are duller (luck considerable amount of contrast) than the rest of the spectrum... Another point of consideration is that if one aims to have correct contrast on whites with a Cmos sensor (similar in appearence with how whites are presented with a CCD sensor or film) when processing, he usually ends up with less DR on the print than if the shot was done with a CCD sensor (especially if the CCD sensor is underexposed a bit and one "holds" the whites in processing while pushes the rest back digitally).