OT: Avengers 3 vs. Black Panther: Cumulative Worldwide Gross

Irrelevant my ass. It’s the highest grossing standalone movie in the Avengers franchise that greatly influenced the success of the followup Avengers movie you're comparing it to that came only two months later.

Black Panther (2018).......................................$1,347,071,259
Iron Man 3 (2013)..............................................$1,215,439,994
Captain America: Civil War (2016)....................$1,153,304,495
Spider-Man: Homecoming (2017).....................$880,166,924
Guardians of the Galaxy Vol. 2 (2017)..............$863,756,051
Thor: Ragnarok (2017)......................................$853,977,126
Guardians of the Galaxy (2014)........................$774,176,600
Captain America: The Winter Soldier (2014)....$714,766,572
Doctor Strange (2016)......................................$677,718,395
Thor: The Dark World (2013)............................$644,783,140
Iron Man 2 (2010).............................................$623,933,331
Ant-Man and the Wasp (2018).........................$617,260,330
Iron Man (2008)................................................$585,174,222
Ant-Man (2015).................................................$519,445,163
Thor (2011).......................................................$449,326,618
Captain America: The First Avenger (2011).....$370,569,774
The Incredible Hulk (2008)...............................$263,427,551