Well, I'd still say the example that always worked for me was thinking of it like a videogame with character attributes... Superman having generally more points than others and having the most even distribution. If he went from 7-10 in speed, you'd see Barry at a 10 in speed but much lower in a number of other things. One of my favorite bits of Superman as a detective:
Because really, even without dedicated learning or exterior means, he's a man who has what's needed to finish a given job.