What sharpening are you using?
Personally I do not apply sharpening at the RAW stage. I first apply (multi-step) sharpening when the image is resized to the desired size...
But concerning your RAWs I've viewed them in C1 with the standard sharpening I use to preview my P45 files.
It is interesting that your images are sharper than mine, as the Contax lenses are said to be very similar to the Zeiss lenses on Hasselblad V
well, actually we would have to do side-by-side comparisions to be sure... but I am talking about my overall impression of your RAWs based on my experience with my P45 files. But the Hassy vs. Contax thing aside the more intressting point is the use of high res digital LF lenses (Digitar & Rodenstock HR)... these are extremly sharp lenses but I still do not see that kind of color artefatcs ... According to your theory I should see more color artefacts and more fake detail when using sharper lenses on the same DB. But I do not ... I only see a more sharp/more detailed image ... for whatever reason.
And while we're at it... I also shoot a P21+ (9 microns!)... and the very same lenses also do not show more color artefacts when shooting this back. The files are just "brutally" sharp (either way if I use the Contax or the digital LF lenses). Of course the P21+ is more prone to show pattern Moiré, but, again, this is a different story ...
So in my - personal !! - experience something simply doesn't add up ...