Well really, this is a very small sample size of the actual projected population. Statistically speaking, you couldn't even include this data because it's such a tiny fraction of the whole, and terribly biased.
Most people who are active participants of the forum seem to be asmodian, with a small number of vocal elyos. Then, the folks who tend to talk more often are the dps classes, which is why a lot of polls end up skewed.
In reality, the player base will be a ton more people. I'd wager a bet that all the fansites combined (at this point in time) don't even reach 5% of the end game population. When Aion gets closer to release, the ads will pop up, marketing will explode, and a ton more people will be drawn in. For example, most people who play WoW don't know anything about Aion until I tell them to go check it out. Even the F2P people (like my brothers) hadn't heard of it. THEN you also have to take into consideration that people, like myself, will be playing more than one. Some folks like to dedicate themselves to one alt... I have six level 70's in WoW, which are all decked out in tier or current season (not welfare) arena gear. I'll end up having a ranger to start, but bet you anything I have one of each by the time the game has hit its first anniversary after release. When the group needs a tank, log on the templar, when the group needs a healer, log on the cleric, when the group needs x, log on x.
In the end, polls like this are just for fun, and can't be used to extrapolate hard evidence to whether to buff/nerf certain things. The actual population will be more normal. There'll be maybe 30-35% of the population on both sides playing tanks, healers, and buffers, and the other 65-70% will be the dpsers. That's just how it goes.
lol