I never will get the love for The Winter Soldier. Yes, it had more depth and slightly more stakes than your usual MCU film but it still plays it safe. Safer than any of the Nolan films, to be sure. With that said, this isn't necessarily a bad thing, Batman v Superman tried to be profound and well... it might be the worst superhero movie of the last 19 years.
But my point is The Winter Soldier is still beholden to the Marvel formula, it just sprinkled in some ideas that it didn't see through with in regards to semi-commenting on our surveillance culture, and otherwise maintained Marvel's friendly disposition.
Anyway, I will second the sentiment that no Marvel Studios film is in the same ballpark as any of the Nolan Batman movies. Even if The Dark Knight Rises and Batman Begins have their flaws, each one was Nolan swinging for the fences, and in my opinion he connected every time. Marvel swings for singles and they also connect every time (save for Thor 2, Iron Man 2, and Avengers 2). But there is a reason nobody outside of the comic book fan community talks about these movies as individual experiences a year or two after their release. For everyone else it is just a blur of Marvel movies. Quite intentionally, they are more like television episodes than actual standalone films.