Flop. Felt like an Avengers movie vs. it being about Captain America. Either way, they pit the Avengers against each other just so they could battle. The angle was weak.
For me, the Avengers series was always blander compared to the individual superhero movies because it's more about throwing each celebrity cast member a line. Too many characters who each have an opinion weakens a story.
So, the fact that this felt like an Avengers movie was a fail in my book. Or maybe it's because I miss Captain America as a blonde.