I love the Are/Ares one!
I can imagine what an ecounter between the two would play out.....
DC Ares: "I will craft a devious plan in which you will unknowingly betray your family and allies. You suffer psychologial torment for months before I strike the final blow. I will then siphon off your power and overthrow my father, almighty Zeus. For I am Ares, God of Wa-THWACK!
(Falls over with battle-axe lodged in skull.)
Marvel Ares: "No, I'm the God of War. You were the God of Tactics of Pussy Pussiness. Now, where can a God get a skin of wine and some Souvlaki in this Hades-spawned universe?"