http://tvtropes.org/pmwiki/pmwiki.php/Main/MarySue
Mary Sue is a derogatory term
Oh.
It is not “derogatory” in the sense that you used the term; you claimed it was misogynistic. It isn’t. It’s derogatory in the sense that a Mary Sue is a hallmark of bad writing, i.e., it isn’t a compliment to the writer if you point out that his character is a Mary Sue.