I love the Marvel stuff. I thought the last Avengers movie might move a little darker but I'm not disappointed it did not. Since I watch them all, I knew the one liners would be there and I expect them. I mean, how can you not laugh as Thor is defending Loki, calling him his brother and of Asgard as someone quips, but he killed 80 people.....and Thor laments "He's adopted". Plus, it gets me to watch them several times to pick up on all the small nuances scattered throughout all their movies.
Captain America, The Winter Soldier had the opportunity to be dark. Good guys, bad guys, bad guys who are now good. The captain, who does not compromise his principles.....Captain America is a good candidate for a "dark Knight" type of flick.