They were both on a boat trip and somehow got each other as room mates. Later when the boat was attacked, Superman and Batman was both on the boat and worked together.
Superman, Batman doesn't have any powers
Superman - because Batman has no "super" powers.
superman will crush life out of batman
Superman
"World's Finest" written in 1941
Superman Superman Returns Superman II Superman III Superman IV: The Quest for Peace Waiting for Superman Superman/Doomsday The Batman Superman Movie: World's Finest Superman/Batman: Public Enemies Superman/Batman: Apocalypse All-Star Superman Leaving Metropolis (which was called 'Poor Superman' in Canada)
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"World's Finest"- 1941
probably batman
in superman/batman 53-56
Superman came first. He was introduced in 1938. Batman followed in the next year.
Batman had the upper hand on Superman & could have killed him with the kryptonite spear, until Superman convinces Batman to 'save Martha'.