I've always felt sorry for poor Ron. He certainly didn't get any looks from either of his parents, nor did he get their charisma and talent. Such a shame that he filled his whole life with hate when he was surrounded by such love.
Must be difficult for the former professional ballet dancer who looks the part to go through life denying the conclusions reasonable people reach about him.
I don't think Nancy is stupid however....Ron is a very stupid man.
Michael on the other hand is the smartest of the whole bunch. Since Nancy resented Michael from the get go. Nancy was hateful and nasty to Michael when he was growing up (she tried just about everything to stop him from living with them when he was a kid). She did not have the influence on him as she did on her own kids. Both her kids have turned out shameful and they are both a huge shame to their Dad.