This is just a mini review after seeing the movie once yesterday, so this is my immediate reaction to the movie.
This MCU movie was unlike any I have ever seen before, it left me feeling sad and I almost cried. Before I saw this movie I was a little disappointed that Captain America did not get his third movie to the Winter Soldier, but there is one element of this movie that makes me understand why his name was needed.
Baron Zemo: I think that Captain America has the best villains and I think that is what is lacking in most MCU movies. Zemo has emotional depth in this movie. I kind of felt sorry for him when he told Black Panther that line about how he told his family that Steve and Tony were the heroes to him. Also, he found out 2 days later that his family died.
This movie delivers: I like how they did not forget about the Winter Soldier movie and continued Black Widow's conversation scene she had with Steve about asking him if it comes down to saving his life would he trust her to do it. Natasha Romanoff delivered an emotional punch and it made the movie Winter Soldieresque and showed how much she matured and how much Steve meant to her.
In a way this movie was a continuity to age of ultron because we get to explore Vision and Scarlett Witch's story arc.
Civil War delivers and delivers again: It had comedy but not too much comedy. I am glad that the Russo Brothers directed this. I have never seen the Ant Man movie but this makes me want to see it now. 
I felt that Spiderman was a little rushed but seeing Spiderman humbles out Tony Stark's character. I could tell that Tony cared about Peter. Tony had one of funniest lines the movie when Ant Man became giant man he asked his team if anyone had any surprising powers now would be the best time to show it.
Steve Rogers shows his adaptation of a man of the modern world, with a timeless friendship:
Bucky is a complicated character and their interactions show that even though they are in the modern world, their friendship has never changed. The amount of love they share is too much to capture on screen. Just when I thought that their friendship could not be any closer, it's becomes solid in this movie.
Redemption: Civil War redeems itself with establishing a closer friendship with Tony and Stark. I never felt like they were friends in the Avengers movies, they always argued and seemed more like just Co workers when it came to talking. This movie shows the juxtaposition between the relationship of Steve and Bucky and Tony and Steve.
Character Intros: Martin Freeman's American voice is great. I had to remind myself that he was not American, not only that but he really utilizes his acting skills in this.
Black Panther:
Black Panther was the coolest in this movie. His character shows his reality when he helps Bucky in the end, by protecting him in Wakanda, instead of blindly fighting Bucky once he finds out that Bucky was framed for killing his father.
Visuals: the Visuals and action in this movie are so awesome. 
Choosing a team: While I am #teamcap until the end of the line, I did feel the emotional dynamic for #teamstark too. Civil War is more about what defines a team than what makes a team.
So who "won" the war?: In a physical sense, Team Iron Man won because by the end of the movie, most of Captain America's team was in jail except for Black Widow who was helping Steve.
Also, after Steve and Tony fought, Captain America gave up his shield and left with Bucky. Emotionally, Team Captain America won because Black Widow ended up leaving his team although Tony told her that they were coming after her for helping Steve.
Also, even though Captain America's team were in jail they expressed their animosity towards Tony behind bars, which is why I feel that Team Captain America emotionally won. Vision left Tony and I could tell by the emotions on Tony's face after Steve left with Bucky that he was sad that things ended that way.
So who really won?: If you want to get technical, Zemo won. His goal was to make them kill each other. Although they never killed each other, Zemo's other goal was to destroy an empire. He wanted them to turn against each other and that did happen.
He may the first villain in the Disney MCU that won: Yep I said it.
Here is a little funny cute picture that pretty much sums up what the MCU fans want iron man and Captain America to do: 
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