Marvel Preppers vs DC Earth
Black Panther
Doctor Doom
Thanos
Reed Richards
Gets 2 full months of prep, access to each other's tech and resources. As well as full and utter cooperation from each of them (complete teamwork, no personal conflicts, etc.).
They cannot use IG, UN and HoTU.
They have full access to any type of knowledge they'd need for the task.
They take on the FULL DC Earth. They must win without destroying the planet.
DC Earth gets no prep and can only cooperate as much as they normally would.
Rounds:
1: DC Earth only.
2: DC Earth gets help from OA.
3: DC Earth gets help from the New Gods.
4: DC Earth gets help from OA and the New Gods.