I never watched The Watchmen, but i find the premise fascinating in that superheroes fuck the worlds shit up. Speaking as an adult with a modicum of emotional maturity, i rarely find superheroes interesting. I want more food for thought, not just "Good guy beats the bad guy up." Elements where the morality is so skewed in the situation that you can't actually agree on who is the good guy and bad guy are good, stories where there is nothing but bad guys are fucking beautiful, but still... i think superheroes are better off aimed at kids who don't need that much complexity to be entertained. Kind of like The Transformers. Robots turn into cars, basically the X-Men only with synthetics, best aimed at kids. Besides, just because it's aimed at kids doesn't mean it's unapproachable to adults, speaking as someone who still watches Digimon for the absurd humor to it all, and who still plays some Nintendo games. The only difference between an adult and a child is a learning curve in standards, not dark gritty realism.
...something the video game industry needs desperately to learn as well...