The point being, I don't think the Elements' "power nullification" as explained here (which, again, Twilight doesn't have it listed, in the first place) wouldn't affect Superman, as the source of his power is inherently different from mystical energies like magic. The only thing capable of nullifying his powers is Kryptonite radiation, or a red star. And even then, Superman has proven to be able to (however briefly) ignore those weaknesses, such as the time he flew straight through a red star (which saps him of his powers), but he still had enough durability to survive a FTL+ (don't quote me on that) impact onto Mogo's surface.