Doom with Prep vs. Apocalypse
Here's the deal - Doom had to prepare for Apocalypse, and knew that he couldn't do it under his own power. So he built his handy, dandy power stealer. He was ready to aim it and steal the power from Galactus, but instead the Impossible Man appeared and accidentally activated it, passing all of his power to Doom. Doom was pissed that he was stuck with the Impossible Man's power, but it was too late to change now, since Apocalypse was only two hours away. Doom is confident (being Doom) that IM's powers are more than enough to deal with Apoc. Is he right?
Doom (with Impossible Man's powers) + two hours prep vs. Apocalypse, also with two hours prep.