No idea how women think to be honest.... and if you ask a woman for her opinion on this it's probably wrong. However I know several guys at various points who dated fat or ugly girls even married them simply because they were up for anything in the bed room and knew how to please them.I knew one guy who dated this complete heffer who worked in a fish and chip shop,so stunk of chip fat probably permanently had a nasty family as well but he told me she took it up the ass all the time so he let some things slide.
And it isn't uncommon from what I have seen and watched ,that when a guy has an affair,the 'mistress' is often not as attractive looking as the wife. Being men, we think 'wtf why did cheat on his wife for that', but the reality is the wife is like a star fish in the bedroom and the mistress is fukking him good. I would bet you this is why arnie cheated on his wife maria shriver with the fat maid (shriver used to be quite hot before she turned into skeletor)
Not sure dikk size matters all that much to women unless they have popped out multiple children and has a cavern down there , it is being an experienced cocksman that probably matters more, unless you have a clit in your underpants of course. But then women are strange creatures, some will date and marry well below their league if the guy treats them like a queen and listens to them.