Also Samote, this test is designed to measure high intelligence. I would expect someone who guessed to get about the same as someone of average intelligence because the majority of people fall in this wide "average" range... once you get above 120 is where this test really starts to differentiate people.
and as anyone knows, measuring intelligence, especially online, is never an exact science.
I still haven't seen anyone really blow this test away and get a 174 like John D Villareal