this fight is on batman's plant Pluto.
each side will have 3 day prep time.
each will have all of their skills powers weapons and abilities.
no speed blitz for superman.
morals on bloodlust off.
battle takes place at night.
in the comic book batman didn't want to go with the rest of the justice league to the challenges.
in this case superman doesn't want to go, and batman one million has to beat him and put his soul in a bottle . that is how batman wins.
superman wins by KO but if he kills batman he loses cause then he will start a war with the future justice league, and that will not end well.