I was laughed at when I said that mj1 would finish under $300 mill, but I ended up being a lot closer than some other predictions.
I still don't think part 2 will hit 400.
There are only so many superhero movies people will pay to see, and BvS and Civil War will both have been huge before Apocalypse opens. I don't give it a boost either.
the infinity gauntlet story had just about every character in the marvel universe fighting thanos, including spider-man, fantastic four, x-men, avengers, britney, christina, gaga, beyonce, etc. etc. etc.
the movie is going to be a lot different