That being said, I think this one will underperform slightly(at least domestically). DOFP had everything from a marketing perspective. We finally got Sentinals, we had a neat premise, the return of older castmates, time travel. Everything we could've wanted was there...and it only did 234 million domestic. This one has nowhere near the buzz and more competition. If it's good, I think it can get to 220 million stateside. Worldwide will be the key to the franchise's future and I don't have a prediction for that yet but let's not kid ourselves, just because Deadpool was huge, doesn't mean another X-men film in which nothing looks different aesthetically will be huge as well.
I love several of these movies but they haven't evolved with the times on some level and I feel like many are not as excited as they could be had they focused on Cyclops, Storm, and Jean or never screwed them up to begin with in the older films.