In these things any universe with a confirmed 'god' character is instantly going to win unless the other universe also has a god character, in which case it would come down to which universe decided to attack first, and which 'god' character was prepared to use their power more liberally. Since in this case DC has The Presence, who is 'omnipotent, omniscient and omnipresent' (from the DC wikia) I going to say that they would win. Simply put, you just can't beat god. It doesn't matter if Goku could single handedly beat every other DC character without trying, because the Presence can simply will him out of existence.