It's not because Twitter's technology is any more superior. It's the simple thing called 'network effects'.
Unfortunately, as others have pointed out, I think Twitter is too far along for their momentum to be stopped.
Valiant attempt, and kudos to the developer(s) for actually getting it launched - but this is definitely like spitting in the wind....imho of course.
I agree, and the solution must be to provide a service that is useful even when not many people are using it. For example, could an rstat.us account be set up so that everything published on it is automatically republished on the user's Twitter and facebook accounts, and any replies from those places published back to rstat.us?
And the beauty of it: the way the technology works (OStatus), every time somebody does this, the overall network gets larger. In my opinion, it's really only a matter of time.
I would wager to say that by now 95% of all Twitter users don't give a crap about the technology.
They just want Twitter to work.
Twitter solves a problem that people didn't realize they had before. The ability to easily see what people are currently doing - the 140 character limitation is a godsend for brevity.
Because Twitter invented that space, it is going to be VERY difficult to unseat them.
At this point, only Twitter can unseat Twitter - quite frankly.
If they get to the point of providing users a viable alternative, then it has worked. It doesn't have to be 10M users.