The Russo brothers have a track record of success that would make anyone jealous, having directed the highest-grossing movie in history in Avengers: Endgame. Not only that, but their four entries in the Marvel Cinematic Universe earned a combined total of over $6.7 billion at the box office and hold an average Rotten Tomatoes score of 90%. However, the question lingers as to whether or not the sibling duo are top tier filmmakers in their own right, or they simply mastered the MCU's formula better than anyone else.