I have problems with OpenSUSE to when I have tryed. I suppose they just compared the highest at the Distrowatch list:http://distrowatch.com/
All of them are in top ten. Pardus are in place 40 now and still going down.
That's worrying because it was up at place 29 or so after they released version 2011.
In my opinion they just must do some more promotion/marketing, update the homepage and so on to break this trend:
Bug # 17211 and bug # 12727
But maybe their organisation is just to slow and bureaucratic to act faster?
Just one example:
Pardus only got banners but nothing more like flyers etc..