VCS comparison

I've been looking for a comparison of the different available Version Control Systems for a while now. The best I could find is the list available over at bitkeeper, which is more a BitKeeper marketing tool than anything else. In other words: not helpful.

Thus, I've just started something like that BitKeeper page on my own website, but without the bias -- at least, that's the intention. I'm probably not doing it right, yet. Corrections and (especially) additions are very welcome.