1. Superman would know more about his heritage early on, and most likely not care for other races of their not Kryptonian. iE, he might just turn out like Zod. Also a scientist.
2. He would be a dictator. A master of magic and science.
3. Be all ****ed in the end. Mind turn into another Jason when he realized Batman’s useless.
4. He would be a humble wise cracking good person.
5. Depending on which era. Early era Odin, He would be a great warrior with an attitude problem, but still likeable. New era Odin, he would be a shadow of his former self that’s the butt of everyone else’s joke.