I'm fairly sure there was a what if superman comic that tackled this.

Where Krypton still exists, but a few kyroptonians like superman were sent to other planets due to thinking the planet would be destroyed.

So because of that fact, superman, and others evacuated like him, become the weakest people on krypton when they get there to see it for themselves.

They become the weak human types that they themselves did the saving of back on earth. Because it's the sun near earth that unlocks their powers, but native kyrptonians evolved to use their own sun for theirs, which is different somehow, to gain their powers. I forget which is which but one is yellow and one is red or some other color, it's been decades since I read it. This just reminded me of it.

It was an extremely boring what-if that I bet only exists because the editor at the time knew it'd be boring and kept saying no, but was hounded by someone who thought they knew better, and wanted to see the story work. It didn't.

At the time a little known comic series called The Electric Warriors sold more than it, so we never got more than just the one what if off shoot.