Yeah, I know what you're thinking, "There are no good Hulk fights." Before you jump down my throat, hear me out.
Hulk VS Godhead and Jamie Madrox (unlimited dupes)
Godhead's abilities allow him to spread a psychic virus (transmitted by touch) that gives him control over anyone who contracts it. He also gets energy from whoever he has under his control which gives him super strength, durability and flight in proportion to the number of people he controls. With the "faih" of a city to power him, he could punch Apollo (he was charged up so he was basically Superman) around the world in under 8 minutes and ignore any physical attacks against him.
You know what Hulk and Madrox do so I don't need to explain it.
Assuming Hulk can't be mentally taken over and Madrox can, and give Madrox a day's headstart to start pumping out dupes, who will win?