We've argued Captain America VS Batman, but what about their successors?
Battle is in a park in Gotham. Both have no other prep aside from VERY basic information on the other. Jason has his Bat-suit, 2 semi-auto pistols, a couple of knives, and 10 razor Batarangs. Bucky has the shield, a semi-auto, a combat knife, and two flashbang grenades. Standard morals apply to both.