Upload & Sell: Off
No, in this DXO spec, actually M9 is indeed better, but not much I believe. This score won't tell us everything, since there is always pleasing color depend on our sensitivity but it is a good indication I will use from now on for any camera I purchase.
The difference between the M9 and M 240 measurement is a completely insignificant 1 point. Even 5-10 points is probably insignificant going by the measurement alone. I'm going to accept what DxO says in that this measurement is not very discriminating. If it was really meaningful, they would use it in their scores...and perhaps no one would buy medium format digital backs since most are also not tops in this measurement yet do have really great color in my experience (as indicated by their Portrait Score)
The DxO score that really matters with regard to color is the Portrait/ Color Depth score. It's described by DxO as:
"Portrait photography: Color Depth
Flash studio photography involves a controlled and usually maximal amount of light. Even when shooting with hand-held cameras, studio photographers rarely move from the lowest ISO setting. What matters most when shooting products or portraits is to aim for the richest color rendition.
The best image quality metric that correlates with color depth is color sensitivity. Color sensitivity indicates to what degree of subtlety color nuances can be distinguished from one another, often meaning a hit or a miss on a pantone palette. Maximum color sensitivity reports, in bits, the number of colors that the sensor is able to distinguish.
The higher the color sensitivity, the more color nuances that can be distinguished. As with dynamic range, color sensitivity is greatest when ISO speed is minimal, and falls rapidly with rising ISO settings. DxO Labs has focused on measuring only maximum color sensitivity.
A color sensitivity of 22bits is excellent, and differences below 1 bit are barely noticeable."