Before I answer and say mine, the reason I am bringing this up as some woman I know made a comment about "stupid men, playing stupid video games." She was referring to her husband, I think. He and I used to work together, and he is far from stupid. His IQ is 139. ( I know, because he and I volunteered to take an IQ test at work as part of some study ).
I also realize that having a higher or lower IQ than the norm does not really make you smart or dumb, in and of itself; it is just like a base to start from.
95% of the world's population falls in between 70 and 130 on the IQ scale.
I tested at 136.
Even though WoW has its fair share of idiots, I think most players would test towards the higher side of 70 - 130. They just like acting the fool behind the anonymity of the internet.