Hmm.. that "smartness to boob size" image seems to say that men judged A-cup women as even dumber than D-cups. B-cup women were average and C-cup the paragons of intellect.
Meanwhile women judged all women as average - except C-cup women who were seen as deplorable idiots.
Might that be some kind of jealosy towards the apparent ideal image?
Edit: Or is the sample size too small, and the C-cup woman was just better at playing to the male audience (in a way that made women uncomfortable)?