I think you need to consider where Captain America is coming from at that time in the storyline. There was, very recently, a group that organized and controlled the movements of super-powered individuals; it was called S.H.I.E.L.D.. Remember what happened with them? Rogers has a very good reason to feel that his moral compass is more accurate and accountable regarding his activities than some third party bureaucracy made up of its own interests and agendas, subject to its own power-plays and internal compromises.
That said, that's motivation. The movie actually does a pretty good job of saying that both sides have perfectly good reasons for feeling the way that they do, and they both make some good points. It's a little odd to have the guy who was saying he had privatized world peace and under no circumstances would turn over the Iron Man suit to the government now saying he's ready for any kind of oversight the U.N. would see fit to install, but they do a decent job of getting him there organically.
I do somewhat wish they had given Rogers better reason to think Bucky innocent from the beginning than "He's my friend and he wouldn't do that." I kind of have to wonder if something ended up on the cutting room floor. What the movie shows us suggests that a brainwashed Bucky is perfectly capable of doing "that", and Rogers knows it. The fact that
Still haven't seen BvS yet, so I can't comment on the comparison.
That said, that's motivation. The movie actually does a pretty good job of saying that both sides have perfectly good reasons for feeling the way that they do, and they both make some good points. It's a little odd to have the guy who was saying he had privatized world peace and under no circumstances would turn over the Iron Man suit to the government now saying he's ready for any kind of oversight the U.N. would see fit to install, but they do a decent job of getting him there organically.
I do somewhat wish they had given Rogers better reason to think Bucky innocent from the beginning than "He's my friend and he wouldn't do that." I kind of have to wonder if something ended up on the cutting room floor. What the movie shows us suggests that a brainwashed Bucky is perfectly capable of doing "that", and Rogers knows it. The fact that
Bucky was indeed innocent of the attack on the U.N. assembly comes out making Rogers less right than lucky... But score one for that infallible moral compass, I guess.
Still haven't seen BvS yet, so I can't comment on the comparison.