Russo Brothers are the fucking men when it comes to comic-booky shit that looks awesome.
They make crazy action shit look fluid and "normal." I don't know how to explain it really, but it seems like a crazy cool thing can happen at any time in any shot like it's not a big deal.
Like, you compare it to another movie (most action movies, really) and it cuts to a specific shot at a specific angle with actors/stunt performers in specific positions because this is the camera angle needed and set-up needed for this specific stunt to be accomplished, and you can tell and it feels kind of artificial.
An extreme example is the
school fight in the first Spider-man movie. It's like "This is the shot where this specific thing happens. And then this is the shot where this specific thing happens." It doesn't really feel like a fluid continuum so much as a string of individual set-ups for individual gags in sequence.
But the Russo's seem to be able to just present shit like it's not big deal. A quick, small example is
during the highway fight in Winter Soldier, a car is exploding on the overpass in Widow's face, and she flips off the overpass, shoots a grapple hook, swings down as the car is flipping off exploding behind her, gets down to the road below into a full sprint without stopping. That's a pretty big, complicated stunt, but it all just happens in an instant like it's no problem. And Civil War takes that kind of stuff and amps it up even more. The stairwell fight with Bucky and Cap going through police is like an extended scene made up only of that kind of shit.
Here's a big statement, and I'm not suggesting they're at this level, but it really reminds me of how James Cameron can make the biggest most absurd technical shit seem effortless to pull off. Between Winter Soldier and Civil War, Russo's are essentially doing that for comic book movies.