You know which movie I think has potential to open bigger than expected if marketed properly towards female...Fantastic Four.
If the trailer is any indication, Sue Strom is a smart scientist on par with Reed. She has invisibility powers, can project force fields that can knock stuff out of the way AND fly.
If the marketing department at fox can hammer the message to the female demo that Invisible Woman is actually a confident lady, strongest and most powerful of the four, and not your typical damsel in distress female character then I won't be surprised if it opens 60+ million.
Unfortunately, the marketing execs at fox and the producers on this film are sleeping.