With shockingly poor performances in key territories like Russia & Germany, disappointing results in Mexico (where superheroes movies are traditionally huge sellers), very good-but-coulda-been-better results in China, I say $400M is too generous. You can see 70% drops all over the territories, families are switching to lighter fares like MU & DM2. The lighter Spider-Man movies
are better performers overseas.
Having said that, I hope WB & Snyder & team do not water down MoS2 for a wider audience. I like the darker tone of this Superman.