James Bond's Jaws vs Jaws the shark. Fight takes place in the arena, but each has his preferred environment that exists only for him.
That is to say, Shark-Jaws sees the arena as filled with water. To Shark-Jaws, Bond-Jaws appears to be walking on the bottom of the ocean.
To Bond-Jaws, the water does not exist, and he sees Shark-Jaws as flying through the air.
Who wins?