That's fair and well, but at which stage in your career can you expect that kind of salary? I can't imagine that the upper 20's and mid 30 year old developers have been in the industry the 15+ years it takes to reach that kind of salary.
Average means you add up all the people, divide by the total. That means while many make under that, there are more than enough making over it to offset that.
"Results of a 2010 survey indicate that the average salary for a game programmer is USD$95,300 annually. The least experienced programmers (with less than 3 years experience) generally earn about $74,600, while developers with over six years experience on average earn $125,700."
http://en.wikipedia.org/wiki/Game_programmer#Salary
You're not thinking about this right, which is why you are surprised by these numbers: becomming a game programmer isn't easy, even if you have the skills, as the opportunities to be hired are few and far between, but the need for them is still high, so the compensation must be high.