Not a team battle. Only a few Avengers will be used. Ben will only be able to use one Alien per Avenger, and can't use ultimate unless it is the alien.
Cap had three hours of prep. Both know what they're dealing with.
Wolverine had a day of prep. en doesn't know much about Wolvie, but Wolvie know all he needs to.
Neither really know what they're up against, but do have some knowledge on the other.
Both know what they're up against. Spidey had five hours of prep.
Giant Man gets no prep. Both do know what they're up against.
Ben gets two days of prep for each Avenger.
Each round is won by KO, or BFR.
Takes place in a random city.