Man of Steel Sequel: Superman/Batman Team-Up!

Warner Bros. recently announced at Comic Con that the Man of Steel Sequel will be featuring the Dark Knight himself! Now we already know that Christian Bale won't be playing Batman since he wants to see someone else play the part, but I bet you didn't know that Batman and Superman may actually fight in this movie, meaning we'll know the answer to the age old question: Who would win, Batman or Superman?