Everything abraxas can do PC supes has done. Traverse dimensions..check, manipulate dimensions...check. PC supe's answer to everything was to vibrate or spin around...and it worked for some reason. Manipulate matter and energy on a vast scale?.....superman closed a black hole with his ass. PC darkseid was galactus according to Jack Kirby. Besides, if all it takes is the big G and a nullifier to beat him, then I'm sure together PC DS and Supes can vibrate enough to go into the marvel universe and get one. It's hardly far fetched in PC supe's world of orange juice time travel