You realize that one of the reasons GX has so many nobles is because of how many realms are trying and failing to suppress them, right? Quit buying into the bull!@#$. Perdan has much more potential than GX, but instead of doing something interesting and starting their own war, they join in a gangbang and wonder why they have hardly any nobles. Maybe if the other realms were to actually be proactive rather than reactive, they might have more nobles.
From my understanding this has actually very little to do with it.