Seriously disagree with you here. I am not extremely attractive by any means, but I'd consider myself half-decent. More importantly I try to dress well, which I imagine (or hope) bumps me up a little bit in whatever criteria that women use to judge a man's attractiveness . As a result, I have had history with some fairly attractive women (please, don't take this as me trying to come across as a stud or something)
Despite this, I am for-sure more picky with personalities in terms of girls than all of my other friends, without-question. Yes, including the ones who aren't as good looking as I am. I just turned down dating a 22 year old girl that my friends widely considered to be 'out of my league', simply because I could not get along with her on a personal level; and I just to cut things off instead of being an ***, and having a casual fling with her before calling it quits.
While I agree that less attractive men might be prone to settling for less attractive women (due to lack of confidence, having no desire to, what have you) I think that an individual's discretion on personality has nothing to do with his looks. But to each his own.
I for one am 120% sure that I am FARRRR more picky with personalities, than I am with looks. Obviously I have my preferences, but I'd rather date a girl who's 8/10 in terms of looks, and a 10/10 in personality, than vice versa.