One of the best, if not the best MCU movie to date. The Russos and the writers managed to blend in the actions, mystery, emotions, and of course, the quips. "Captain America: Civil War" is an appropriate finale for the ever-improving Captain America trilogy. While it doesn't break new grounds in the genre ("The Dark Knight trilogy" and 2012's "The Avengers" have that honor), it certainly did enough to offer something new to the audience (In a much better way then the other Superhero vs Superhero flick earlier that year).

While some people think that the villain is weak and boring, I think it's one of the smartest villains in MCU. While a great many people see this is an Avengers movie, there are some (including me) would still see this as a Cap movie. The Civil War event and the other Avengers are build around the Cap/Buck story arch, a continuation of "The Winter Soldier". Yes, this is a busy movie (Also the longest in the MCU), but it doesn't feel that long and/or boring, thanks to the lighthearted moments

As far as box office go, this was the box office king of 2016 (Internationally, not just North American Box Office), and deservedly so