Yeah it says something about a game when the "top" players are all the same few classes. Maybe if a few of the other classes got a look in the population wouldn't be diminishing so bad.
If you built something like this
for star wars, any marauder spec would 10 - 0 any DPS Merc or Sorc build.
You can't judge this game based on 1v1 potential though, whats the point of even having pure healer specs and tank specs if you judge the best players on 1v1 Potential? Star Wars != Street Fighter.