Re: The box office "bar of success" for Batman/ Superman.
Looking at it realistically, the movie will have an opening which will be at least 25% bigger than MoS. And it will have relatively low competition since it is at the end of July as opposed to mid-June.
OS numbers will probably be very similar to TDKR, so 550M+ OS should be easy to do.
Domestic, the OW should be 160M, (MoS OW + 25% roughly), and legs should carry it to 380+ easily. So, going with 900M for this. Probably will finish #3 domestically behind Avengers and Star Wars. But if it becomes a cultural event, then it can easily be in contention for top spot of the year.