Rebirth Superman has yet to prove to me that he's anything close to what he used to be. Those God Slayer guys can tank Superman's punches but when a Truck is headed their way they get run over? Seriously?
If all characters are in character I can see the team winning this in a hard battle. Since Superman holds back too much, and often loses fights that he shouldn't because of it. However if Superman knows exactly what theyre capable of and doesnt hold back as much, he'd win. Superman himself is the deciding factor of his own victory.