What is Fedora's competitor?

> But "unstable" itself seems to pull off the trick that Rawhide does not:
> It moves fast, but is completely usable and very rarely broken. I don't
> know why it is able to do this: possibly it's down to something as simple
> as apt, or possibly it's the Debian policy.

One thing is that a majority of developers (I believe the vast majority,
but I may be wrong), and lots of users run unstable all the time.

From the little I know from the outside it doesn't sound to me as though a
majority of Fedora developers and power users run rawhide, at least for a
large part of the cycle, is that the case?

Thanks,

James