Batman vs World Breaker Hulk
Batman has 9 months of prep (WB Hulk was waiting for his wife to give birth before he can safely go all out during a battle with no worries on his mind).
When the 9 months of prep begins, Batman already has existing knowledge about Hulk and his condition, along with some beginner's research on Gamma Radiation.
Batman has access to Justice League resources, but no BFR allowed, and no allies allowed on either side.
Fight is in-character, taking place in a world where there are innocent people scurrying about.
Who wins?