Once again that is what she is saying post break up. He could be slightly above average, she loved him therefore will prescribe more value. This is further proven by calling herself a plain Jane, not the most confident statement.
That is still fairly anecdotal, she was in love with him and probably attributes further value. I am not saying that your post is wrong but we should always question, that is how you grow. You don't take the redpill without questioning the society around you.