In a little over a week, we'll have a definitive answer, which will conclude four precise MCU phases or what Kevin Feige calls 'The Infinity Saga.' For the last year, fans have been eagerly waiting to see how the surviving Avengers will try and reverse what Thanos had done with the Infinity Gauntlet. We could take it even further and say Avengers: Endgame is the most epic cinematic event of the 21st Century. To many, this is the cinematic event of the last 10 years. As you can see, there's no contest between any of these MCU films and Endgame. Runner-ups at Marvel Studios include: Spider-Man: Homecoming ($140M), and Guardians of the Galaxy Vol.
To put things into even more context, Infinity War's massive marketing fund only contained $150 million.