Thanks for the files. I've just made some brief observations. The camera is a 1DsIII, I'm assuming it's almost exactly the same as 5DmarkII so I used profiles for the latter as I have DCamProf profiles for it.
DCamProf makes no gamut mapping, Adobe Standard makes some small gamut mapping, but not very successful I think, just a quick compression towards the end which reduces the number of tones, then C1 gamut map quite heavily which is likely causing a bit of hue shift, red roses become more orange. The C1 rendering gives the impression of having most tones though.
I think what happens is that the red roses are so red that they glow, and in that red range the eye don't differ tones that well, so it looks less detailed. With the C1 gamut mapping the rose is less saturated and more orange and thus looks more detailed. C1's result looks quite similar to Trantor's SSF-based sRGB gamut-mapped profiles published in this forum a number of months ago.
I don't feel any urgent need to do anything with DCamProf in this area. A small gamut compression towards the edge like Adobe does seems to be a bad idea, and while the C1 more heavy gamut compression (Hasselblad's Phocus does similar things) can make better prints per default, it does distort color and it should be quite easy to do the same with post-processing techniques. But at some point I'll probably include gamut mapping features for those that want it.