For the first time, the cover actually ties i with a story inside...only not really. The question it refers to is "How can there be three Supermen?" and you can read the answer yourself since this issue's entire Wayne Boring drawn SUPERMAN story (with Luthor!) appears here. Or you can probably just guess it. The real question, of course, which is not addressed anywhere at all, is WHERE THE HECK IS ROBIN'S MASK???!!!
Yep, superheroes in comics might be scarce at this point, but on TV The Man of Steel was early into a long and memorable run!