TFA made 2 billion, even though it didn't make that much in China because they don't care about SW over there. If this film wasn't mediocre, and it had a 97 % on RT like Fury Road, and it was a fun film and not boring, I could see it making 2 billion just because of the repeat viewings and how big these characters are, but it won't happen, and JL won't be a big deal either...not after this mess. It's over...they'll make good money, but WB dropped the ball.
Did it? Huh, I must've missed it since it didn't dethrone Avatar. Everyone was fixated on that for a long while... As for BvS, dunno. If it was that good, maybe, but eh, I don't know. The GA knows Batman and Superman, but they don't care as much when compared to the past. CBMs have become the norm, rather than the exception. I could see it happening, but I wouldn't bet on it.
As for JL, if it's actually a good film, I could see it making some bank. AoU was mediocre at best, and thus didn't meet expectations. Deadpool was damn fun, and it defied expectations.