The Hergula: Christopher Nolan´s “The Dark Knight” trilogy is to thank for the upcoming serious superhero movies like “Iron Man 3″ and of course “Man of Steel”. Decades upon decades have we seen superhero movies with humor and corny jokes that give the films a more light-hearted feel. While there is nothing wrong with that, especially because humor sells, it is still more satisfying to see more serious, emotional and dramatic superhero movie that is not sprinkled with cheap humor. “The Dark Knight” trilogy did not only paint the way for upcoming superhero films, but it seems that the upcoming “Man of Steel” may even be an improvement over “The Dark Knight” trilogy...
But I understand what you mean.
God forgive me for comparing those two.
A movie is realistic when characters are both relatable and believable, the performances convincing, and the events make sense within the confines of that particular world. A dark color palette & mood is a stylistic choice, nothing more. If that's all it really took to make movies resonate with people, then films like Dark City, and heck, all of film noir before it, cracked that code a long time ago.