I like Both! Both were orphans. Batman wasn't adopted out, but he saw his parents die, so there was his driving conflict. Superman had the Kent's who adopted and raised him. They gave him the love for his adoptive world that he might not have gotten with any other family, or if the Gvt had found him. I read the comics long before movies. And the old TV shows. And by the way, Spiderman rocks too.
My hero was my Dad. He was a genius, literally. He could do anything in my eyes. Then he got Alzheimer's and even then his gentle nature came through. Until he reached the point that he couldn't speak clearly, he still asked my Mom every day "What can I do to make things easier for you!" I miss him.