Well, im not going to say who wins (Necrosword does) but I will say that with All-Black Gorr will not just automatically be speed blitzed as he was able to see and react to things going vastly faster than the speed of light so thats out. He can create his constructs some of which killed Gods by themselves. And I dont see Supes attacks being as powerful as Old Thors. Sending a being lightyears away. But I also have not read these particular comics of Superman so Im sure someone is going to tell me how Superman stomps with noneffort whatsoever soon.