This question, tied in with Gillette, may be geared to the new movie coming out this summer. However it would still apply to the Superman of Toobworld, who died back in the early 1960's...... Up, Up, and Away!
As the Trickster once said, "Reality is boring, that's why I change it whenever I can."
I'm just "The Man Who Viewed Too Much", and "Inner Toob" is a blog exploring and celebrating the 'reality' of an alternate universe in which everything that ever happened on TV actually takes place.
Most of my theories about the TV Universe come from thinking inside the box and thus can't be proven. But I've never been one to shy away from a tall tale.....
Remember: "The more you watch, the more you've seen!"