How I love seeing statistics like these. Likely the forced population balancing mechanisms were for the best, else I think we would see numbers here that were very disparate across the realms. No surprise that Assassins were the top AP earners in that little graph.

What I would really like to see is the class breakdown by realm. I think it is likely that each realm favors certain classes above the others and the breakdown (certainly at the higher levels) will eventually show this off quite well I think.