I think what you're seeing in your frames is that there is a really good key light in both movies, so there is a good dynamic range and contrast maintained. The black levels are what sells it, and if you have enough contrast and really good black levels, then people like me don't have to keep adjusting their TV sets. Part of the fx guy's issue was that because Par took so long approving the design, they only had a week or so to paint this 10 ft miniature. I have a feeling there were compromises on the paint job, but it still looks different in different lighting schemes (compare your e in neb stuff with, as I indicated earlier, the e in earth orbit and e in earth orbit spacewalk stuff.)
But I think Knoll's work was really good in both. I liked that the -B stuff had its own look as well, consistent to a degree with previous movies, and the cg -b is one of the best matches to a miniature in terms of lighting and texture that I've ever seen.