Never judge a film by its poster.
Or at least don't judge this film by this poster 'cause this poster's very bleh.
One of the more interesting points on the business side of this whole 'Marvel Cinematic Universe' shebang is how The Avengers' success impacts the subsequent films; does co-starring in the big climactic team-up increase awareness and box-office muscle appreciably for the non-Iron Man heroes? I'd imagine that's something Marvel Studios are banking on. While I consider Captain America: The First Avenger to be a great film - in fact, it's almost a perfect film, insofar as it's the best possible movie that could be made out of both Cap's origin story and his delivery into the modern world - it only did okay at the box office for one reason or another, not much more or less than The Incredible Hulk (which you'll notice has yet to have a sequel mentioned).
Judging from what I've read, this paid off with Thor: The Dark World, which comfortably outgrossed its predecessor even after opening in the tail end of Autumn. So will the same hold true for The Winter Soldier, which with Black Widow in a featured role and much SHIELD shenanigans is doubling down on residual Avengers love?
I certainly hope so, because once again the Sentinel of Liberty has delivered a hell of a movie.