Athena, goddess of wisdom, battles her half-brother, Ares, god of war, in an all-out one-on-one brawl to the death, with both deities using their full powers and skills against each other for triumph. In the end, who wins?
Ares is twice as strong as Athena, yes, but Athena is far more intelligent and manipulative, and has special powers Ares lacks. I think the most likely outcome would be some kind of draw; if he caught her by surprise, Ares could win, but Athena would if she had time to hatch some kind of complex plan.