Gonna call shenanigans on the question here.
The moment we throw out collectible and verifiable data, and data sources, it all becomes social science at that point. Few people are going to concede the fact they might not be as smart as they think they are, especially in public. The Ego Ideal is a thing, after all, and noone wants to lose grasp of it.
Honestly, a better question would have been to ask the Zone how smart they think the others here are, and that'd quickly deevolve into either a circle-jerk or a flame war. The past five years of the Zone have proven which road we'd go down.