I hope I'm not changing the subject too much, but I recall that when the 5DS cameras first came out, the Adobe profiles were noted to be much different from what we had seen before, with steeper (more contrasty) curves, for example. This had a consequence of making the noise look worse than it was, among other things.
After some time of people discussing the issue, there was a post that someone made saying something to the effect that Adobe didn't know what all the hoopla was about. They changed the standard profile to one that was more pleasing. I'd look up the relevant post for a more accurate citation, but I don't have time at the moment.
The point is, the color difference was not a failed attempt to get colors to look the same, it was a purposeful attempt to get them to look different.
Thus began a discussion of whether the past practice of using Adobe profiles to align disparate cameras to each other was folly and a recommendation to make your own profiles.