Simple self selection would dictate that an honest assessment would have a heavily weighted upper end given the context of the site.
Honest assesment means taking a certified Mensa test. They're free, take about 1 hour and are given out regularly at local universities.
Once you have that certificate, look at it, smile, then put it away in some drawer somewhere so it doesn't gather much dust. Because nobody cares.
Actions define how people are perceived.
Sure, but that wasn't the question was it? Honest assessment is just that, it doesn't require an appeal to self selected "experts" on the subject.