Battle of Supermen - Battle Royale for supremacy
Superman (Christopher Reeve)
Superman (Brandon Routh)
Superman (Henry Cavill)
Clark/Superman (Tom Welling)
Superman (animated series/Justice league/JLU)
Superman (Superman Doomsday Animated movie)
Superman (from All Star Superman)
Superman (from Superman Unbound animated movie)
Superman (from Superman vs. The Elite animated movie)
Some rules:
put in order of weakest to strongest.
No aid from outside
The fight ends when one is standing.
Location - Indestructible Earth.
All Supermen fight at same time.