Boarder War
Suppose that the DC comics "New Krypton" event and the Marvel "Seige" event were combined. However, rather than the Kandorians claiming lands that put them at odds with Earth's human's, they try to claim the same land in Oklahoma that is being occupied by New Asgard. Both sides engage in an all out war for control of the land. The US govt. and it's super heroes decide to sit this one out and deal with the eventual winner.
Team 1. Kandorians: Everyone featured in New Krypton, except Superman and Doomsday, led by General Zod.
Team 2. Asgard: Those that were featured in "The Siege", minus Thor and the various Trolls, Dwarfs, Giants, and Monsters, led by Baldur.