Yeah, but Ares was a wuss who would run home crying if he got a splinter from his spear. I think you're overestimating the power level of the gods. Greek mythology, much like a lot of other mythology, is full of stories where the mortals manage to one-up the gods themselves. Furthermore, they are portrayed as very much fallible and prone to human foibles such as pride and jealousy. These are not all-powerful beings perfect in every way.ruleslawyer said:-Diomedes, King of Thrace, wounds Ares in combat. Getting close enough to a deity (or even an "avatar") to do this is pretty extraordinary.
You can use Intimidate in combat to demoralize an opponent and make him shaken for one round. So it wouldn't be too much of a stretch to make up a feat that allowed the heroes to extend the duration of the effect so they could do it again on the already shaken opponent.-Likewise, Achilles, Hector, and others literally send men fleeing from the field at the very sight of their anger. Again, this isn't something that a non-epic-level fighter, however powerful, can do without magic ...
As stated above, there are plenty of stories and myths from all over the world where "normal" mortals perform all kinds of amazing feats. You don't even have to look very far back in history to find stuff like John Henry and the American railroad.The Greek myths, along with superhero comics, are the only "literature" I know that actually accomodate anything like the possibility of epic-level characters.