Ubuntu, openSuSE, Mandriva, Fedora, Debian, distrowars, mine is better than yours. Newcomers, intermediate users, advanced users, kernel hackers, switchers from Windows, dual-booters, servers, workstations, desktops...
We have closed the 3rd quarter of 2011 with all these discussions continuously going on in the forums (to nowhere basically), but who is to decide for the Linux distros at the end? Of course the public is and here we have the results for the major Linux distributions.