Makes it clear that it doesn't matter which one you choose, for the vast majority of us, as long as you choose to use one. If you are an independent developer, or in a small group project, choose one of these DVCS (choose CVS or SVN if you've got a substantial number of people well-trained in using them; a lot of hw chip designers seem to be used to using CVS). Any one of these three have enough tutorials and intro docs online that most of us can get started using any of them with very little effort.
I've been using Mercurial for most of my projects for over a year and a half now, have used git for a handful of projects, and have used bazaar for one (git and bazaar were chosen by others who started the projects). I have encountered nothing troubling (except for my own fumbling errors) ever.