Hulks vs Marvel Earth
Kang thinks World War Hulk is silly because there weren't enough Hulks, so he decides to throw every single version of the Hulk to be ever created into Marvel Earth (all personalities, all alternate-selves ever shown and Hulk's alternate sons and daughters).
Team Hulk has one month prep, will not fight one against the other unless that's part of their plan, and will be teleported in New York city at the same time.
Can Marvel Earth survive a REAL World War Hulk?