MoonSong
Rules-lawyering drama queen but not a munchkin
It's been over a year since I thought through this, so correct me if I'm wrong, but I think what my formula does is match a particular INT score with the IQ score that has the same probability of appearing in the population. The extreme IQ scores that appear on my table are 'fantasy' IQ's that are as improbable in the real world as it would be to roll the equivalent INT score with the generation methods given, which is to say practically zero.
I just checked the math, you were actually correct. ("Mostly" correct. The SD of 3d6 is 3.03 not 2.96 n_n) mmm, your chart actually shows higher overall IQs per Int point. No Ralph Wigums in D&D it seems