Well in fact I think the hype is about all DSVCs togethers.

But the git advocates are just more vocal, often more agressive in their comments to be honest and like to talk about it everywhere.

I suspect Mercurial to be widely used, certainly as often as git, maybe more (Microsoft and other big companies use it now), but people using Mercurial most often just wanted a DSVC they can grasp quickly, not something to base a religion on. So they are least vocal and more reactive in discussions than pro-active like some git users.

Bazaar isn't talked about a lot certainly because only few big known projects do use it and no other big companies than Canonical is known to use it. Compare to Google (git, mercurial, svn) and big open-source projects for example and you can see why it's not really talked about. Fossil is another one that is interesting for a a niche of devs, so I guess it's normal and fine to them to be heard of only by those who search the features they provide (like embedded wiki, issue tracking and forum).

That being said, I think we're slowly getting down the hype curve (http://en.wikipedia.org/wiki/Hype_cycle) and a lot of developers having used several different solutions can start to see wich one fit their needs.

Also, Google Code Hosting and SourceForge now allow both git and mercurial so it's becoming more a project-specific choice than before when you chose git because of GitHub features.

There is no real war, just an interesting variety of tools.