Superhero comics love a good analog. Captain Marvel is Superman, but more boyish, and with magic words instead of Krypton. Moon Knight is Batman but with a mercenary past. Watchmen is just a riff on the Charlton heroes. Marvel has Mister Fantastic, while DC has Plastic Man and the Elongated Man. And so on and so forth, ad infinitum.
This is all terribly reductive, of course, focusing on the core extrapolation point rather than what is done with the material afterward. Sure, many times these caped correlations show little creativity beyond tired parody, but there are occasions where, as in Watchmen, they blossom into something entirely different and delightful in their own right. More… “Unrestrained Analogs”