The fifth and sixth stages are different between the Arcade and console versions.

In the arcade version the fifth stage is a high-rise building where you fight a militia working for the main villain, and when you reach the rooftop you fight the fifth boss of the game. The sixth and final stage is made of a boss rush where you fight all the previous gangs while chasing a big crime boss in the harbor. After defeating all the gangs, Spoiler:the crime boss gets killed and the final battle against Martha Splatterhead ensues.

In the console version the boss rush takes place in the fifth stage instead, right before facing the militia. The sixth and final stage is simply the final boss battle set atop the rooftop of the high-rise building, with the harbor stage being completely removed. Additionally Spoiler:the crime boss from the arcade version is missing in the SNES port, which establishes Martha Splatterhead as the leader of the gangs early on.