Same guy different timeline. We don’t treat Hyperion as if he has a magical allergy if they have yet to show him wilting while around guys like Doctor Strange. Have you ever seen this happen to him? No, Billy isn’t going to enter the field of battle and suddenly Hyperion begins feeling sick due to his magical presence. The quote was simply there to show that he had limitations.
Shazam is not going to hit Hyperion harder than Gladiator hits Hyperion, however, if Billy hits him with magic that would not normally burn his skin, he will sustain burns. This does not actually reduce his toughness, he takes it but it hurts like hell.
Hyperion is likely going to allows Shazam to keep doing that though. Hyperion knows all about his speed limitations within an atmosphere as well.
Dragging the fight out into space isn’t beneath him.
Whoever wins, it will be tough.