I'm throwing a flag on this statement.I'm not sure what this idiomatic expression means, but I suspect it's not a compliment on my insightful post...
First off, anybody willing to accept the overall IQ of the 5D over later versions should have no problem adjusting color in ACR or other top-end editors. Secondly, since your statement is non-specific, it has no vlaue in a 5D vs "anything else" conversation.In the text you quote I was responding to a specific question by privatebydesign (here rephrased): Why is the colour reproduction of different sensors discussed at all, when profiling ought to make them all identical? As I explained, the mapping of a full spectral distribution into three numbers (R, G, B) depends on the particular filter curves of the sensor. Profiling helps in making this mapping as close as possible to some standard, but it is in general not possible for sensors with different filter curves to give the same colours for arbitrary spectral distributions, no matter how careful the profiling. I can give a more detailed explanation with examples to help you see why this is so, if you are interested, but I suspect you are not.
In summary, that is why claims of "better colour fidelity" of a particular sensor (in this case that of 5D) cannot be simply discounted by arguing that you can always profile away any differences, since that is not generally true.
Picture Styles does have some limitations, like getting those settings applied to RAW files in third party software, but it is very powerful, with six HSL primary colour adjustments, there isn't much you can't correct for, certainly the differences between a 5D and a 5D MkIII are no issue.I'm sure the colour reproductions you can get from 5D and 5D3 are similar enough to not be an issue, but I find the claims of 5D's higher colour fidelity interesting and wouldn't mind seeing some evidence for it.