I stand corrected, I was using Superman II's numbers by mistake and got 700 million. The OG Superman in the 70s made a billion, which was an outlier event since it was the first major Superman movie, no other Comic Book Competition/Fatigue, and the GA was comprised of Greatest Generation/Baby Boomer comic fans who were locked in to the property. Parts 3 and 4 were unmitigated disasters and took decades to bring him back to the big screen.
In 2025, GA just isn't into him as GenX, Millennials, Gen Z, would spend money on any other property but Supes....
Numbers don't lie.
As for BvS, WB rushed and tried to make Avengers DC version and crashed. It didn't crack a Billy because there was no build up(and the fan backlash of Affleck as Batman also didn't help). The result would have been the same if we did Iron Man and just went to Avengers without any of the other setup films.