Suggested by Blood Dancer

For this match, the brothers start at the top level of a 20 story building. There are about 200 zombies on each level, no elevators work in the building.

Can they get out?

Here we have a nice cat and mouse scenario. For this match, the Winchesters have an idea of where Selene and Michael are hiding. So they would first have to be able to track them down and then defeat them.

Which side would come out on top?