Neighbors does look great & like it has the potential to break out. I think Spidey will be fine though. Really, worst case scenario, TASM2 does "barely" 700 M WW, they still make money, not as much as they'd hoped but they'll learn to choose a better release date next time.
It's Spidey sure but sandwiched btw Cap, Godzilla having a huge buzz like we said, DOFP (although I wonder if it's not gonna underwhelm as well BO wise), it's gotta hurt.
However, if WOM is good and it seems to be, it could make up for it with legs although most blockbusters are just frontloaded as hell and that's just the nature of the beast.
Better release date, TASM2 probably would have had a legit shot at 1 billion, that or erase Raimi's trilogy from the GA's memory or something