The Pirates 5 reviews were completely expected when they put an embargo on even social media reactions following the Cinemacon screening. Summer is now desperately in need of a movie which everyone can go to an enjoy and which will have good reviews and anticipation as well.
If WW reviews turn out well, the sky is the limit for it. Whatever be the opening weekend, it can get legs for weeks altogether. Post WW, June has The Mummy which is looking like a 50/50 shot on whether it will be good, Cars 3 which will be another Pirates 5 IMO, and then TF5 which will be another Cars 3/Pirates 5 (I actually watched a pre-screening for TF5, and all I can say is that its pretty much the same movie all over again)
If Pirates 5 and Baywatch disappoint at the box office this weekend, there will not have been a breakout movie in a while - the final marketing push plus reviews can put WW over the top.