That should really be the long and short of it, but we can also expand it to the fact that the ancient Greeks venerated Athena much more than Ares because he was just mindless bloodshed while she covered his area without the drawbacks. She even valued men over women, so it wasn't really even a "women = good, men = bad" thing with her. He was just kind of a useless idiot compared to her.
Even the myths that depict Athena as being more spiteful and villainous (the versions that have Medusa be a rape victim instead of complicit or Athena simply being jealous of Arachnae without any arrogance on the latter's part) come from the Romans because their culture venerated Ares/Mars and didn't have as much use for Athena/Minerva, so she was less likeable in their versions. By Greek god standards, Athena was generally depicted as being more reasonable than many of the others.