Ares is overrated. The fact that a mere mortal like Diomedes was able to wound him in the course of the Trojan war makes one wonder if the god of war was truly all that he was cut out to be. Personally, I think Athene was far more impressive as a war deity. Simply by blessing Diomedes, she succeeded in humiliating both Aphrodite and Ares on the battlefield. That speaks volumes about the kind of power and influence that she wielded over warriors.
This all does not really contradict to what I was saying. He is the god of meaningless war, massacre, slaughter - as far as it goes - genocide.
Ares.... Is not the act of waging a war.... he is the act of fighting it.Athena's domain is strategy, tactics, supplies, and training all physical and mental aspects. Ares is the frenzy, the horror, the suffering, savagery, and rush of battle, he is the human cost. He is the spirit of battle.Athena is order. Ares is chaos.Athena is human planning, Ares is Human feeling.Athena is what you know, she is knowledge. Ares is what you feel, what makes you human.SO it could be argued that ares is morale, and iron will..... And maybe the god of Stimulants.Athena would be the other side of the equation