This is a question without an answer, but if I may be so bold as to speak for the entire body of comic book enthusiasts of the universe, I will answer it. Superman and Batman are the two greatest superheroes ever. The result of who would win in a fight that involves either Superman or Batman is always either Superman or Batman. But what if they fight each other? They both possess outstanding physical and mental abilities, although Superman excels in the former and Batman in the latter. So the results rely on two crucial variables: (1) Do they have preparation time? (2) Are they trying to kill each other? On neutral territory, without preparation time, Superman wins. Only with preparation time does Batman gain the edge by arming himself with plans that exploit Superman's personal and Kryptonian weaknesses. But if they're trying to kill each other, Superman wins hands down. Among Superman's diverse abilities are super speed and heat vision. This means he can lobotomize you before you even realize he's in the room. Batman can do that too, but not as fast as Superman. Case closed.