If, however, you're suggesting there was a 'transposition' when that decision was made, then I'd probably agree with you
Honestly, I just don't think Siegel and Shuster went as far as rationnalizing this issue. Clearly, the cowardly meek Clark Kent who was hiding his face behind glasses was not his real personnality, but that's it.
I just think it's the kind of question that should not be answered. In fact, I think the passage in AC where, when asked about it, Clark just says "how about we talk about something else?" is the most clever way of dealing with this.
However, if I had to choose, I'd say Superman. Because Superman is what happens when you take a last of his kind alien (Kal El), and raise him as a human being (Clark). He's not just a normal Kansas Farmboy: his powers, his perception of the world induced by his supersenses, hell, probably certain natural inclinasions specific of his species make him too different for this. But he's not a Kryptonian either: his culture, his upbringing, his friends.....all of this are human by nature. he is nature AND nurture put not one again another, but together. He's not human, he's not alien, he's superhuman. Y'know.....Superman.