http://gw2census.com This site breaks down what class/race/pvx will you be polls into one website. You can play with the charts a bit to get at some interesting data. I was surprised how evenly balanced the profession mix was. I was not surprised that the massive majority of charr want to be warriors.
It might have something to do with the awesome greatsword on your back while running around on 4 legs.
I also noticed that engiees are typically char by a wide margin. That surprised me. I would have expected more humans or maybe even asuras. I know they have 2 racial abilities (trip mines, and arty barrage that might compliment).
Im actually surprised at the large amount of male chars, seeing that most men and women play females in MMOs.
I just noticed that female gamers tend to play eles the most. This confirms my suspicions about Unknown. Secrets out! =P