I think the cop analogy was used to make one point (that he has to put on a persona of authority like a cop would), not to describe what Superman is, what being him means overall. Superman is not like Spiderman, no matter what side of the camp your on. Parker got powers accidentally, and was driven by grief and a feeling of responsibilty to honour his Uncle. But Spiderman is just the costume he wears and the name they give him. Yes, he can be more daring, he is a bit more cocky and fearless when he's in costume, but that's because he feels safe behind his mask. But when he's Parker, he doesn't have to pretend to be an awkward nerd, because he IS that in a major way. Superman is different. As I've said before, his much more like Batman in his personas, in that neither his public face as Superman or Clark Kent are real. You can only truly know the man when you find out his secret, and then he can be who he really is, which is a combination of both personas. I don't see what's boring about that, or how it's following trends in Marvel.