My DC fanboy friends review of this movie was kind of weird.
Silly. I really can't think of any poorly placed humor other than maybe the end but friends joke to get through struggles all the time...
I watched it and I consider myself more of a DC fan, I thought the Russo's nailed the right level of joke/seriousness.
Things I liked:
+Antman, surprise cool character of the movie. He was great. Didn't even care for his solo movie that much but he did some cool stuff and was entertaining.
+Spiderman was cool. I thought they delivered on him and I wasn't even hyped or anything for him. The Cap vs Spiderman fight was a highlight of the movie for me, pretty much all of his fights were fun to watch.
+Tony Stark's approach to the situation, up until the reveal (which was unfortunately spoiled for me like a year ago or something like that).
+Bucky & Falcon interactions.
+The Airport Scene
+The Final Fight
+Vision and Scarlet Witch stuff
Things I disliked:
-The reveal that Bucky killed Iron Man's parents. Him going ballistic over it seemed... forced? Maybe it's because his parent's hardly ever seem to be a central part of his life up until this movie, I think at best it was just him resenting his Father's expectations in one of the IM movies. Maybe if he was still convinced Bucky was doing things without brain washing, but at the point it looked like he was sold that Bucky was brain washed.
-Zemo was a nobody. Nothing compelling about him. We don't even know his origins until the end of the film and it's barely anything memorable.
-The reason for the Sokovia accords. I'd consider 74 casualties or whatever a miracle when aliens invade NYC. They should have doubled down on Ultron, but that would change the story entirely to shift blame on Tony. Even the other casualty accounts were ridiculously small.
-BP was just... there. Maybe GAF hyped him up too much but he wasn't really notable, it was almost absurd how many times he was cockblocked from killing Bucky. I found Wakanda interesting but it was just that after credit scenes.
-Vision doing nothing during the Airport fight. He was mostly just there to shoot down Rhodey. It would have been cool to see him try to stop both sides from fighting or minimize destruction.
-Early fights had way too much Shakey Cam + quick cuts.
Overall I think I'd put it in the upper end range of Marvel, on the same level of Avengers, not as good as TWS & Guardians.