(with nods to Bullet Sniper)
Primary scenario:
no weapons except what they can find around them.
they are placed in a large warehouse filled with shelving, scaffolding, chairs, desks, 10-foot folding ladders, pallets of paper, one forklift, and a manual pallet jack.
which environmentally aware fighter comes out on top?
(anything and everything Jackie Chan has done that falls within 'peak human' or 'metahuman' in a live-action movie will be allowed to help compensate for Bourne's super-human damage soak)
variant scenario: Jackie is drunk. (can't believe I forgot that one, LOL)
(edited again, because I forgot my manners)