Team DC: Batman, Cassandra Cain, Green Arrow, Ozymandias, Nightwing
Team Marvel: Black Panther, Captain America, Daredevil, Punisher, Winter Soldier
All DC characters pre-52. Standard gear for all, in character.
No prep, basic knowledge of opponents. Teams start 200m apart in the middle of a bombed-out city:
Edit: Ok, I swapped out Blue Beetle and put in Cassandra Cain.