"Pre Crisis Superman has beaten foes like that before "
DS has 7 pieces of Judas Pain with one piece he can warp reality. he also has trillions of shields that can asorb any attack and he regenerates the shields every millisec. his shields are so powerful satan could not break through them he he stalemateded god. he also took a reality warping attack with out a even a with no damage
yeah but both of these events where one time things its not like he can do it when every he wants to. superman wont even be able to touch DS with all his shields. and his summons that can destroy realities
"PC Superman was pretty much a God One of the reasons for the crisis was to make superman weaker. "
yeah but he weak against magic and DS is a sky father level magic user. also how would superman hurt DS he has trillions of shields that can each take anything superman can dish out and he makes more even millisec.