Incredibles 2 will have to jump a lot higher than Finding Dory to Finding Nemo (even more than Nemo’s original gross) did in order for it to reach 400 mil, but I think the original Incredibles never reached its potential thanks to a ton of competition. Plus, Incredibles 2 has a great release date.
So perhaps you’re right. Deadpool 2 does have Avengers and Han as competition, come to think of it. I just really liked Deadpool 2’s trailer haha. I hope it does great.