Hometown Advantage
OK, we have a fair idea of superman's abilities, and the almost uncomprehending reach of these abilities (Super strength, ! though it has fluctuated over time).
I wonder, he draws energy from the sun right.
If he were to fight (anyone, doesn't matter), on the surface of the sun, would he be practically if not most definitely indestructible more so and posses actual infinite strength, due to the fact that he is surrounded by and also at absolute focus point of his energy source.
Could kryptonite even cause a negative effect?
All based on the assumption that he could walk the surface of the sun of course.
Cheers