Well, despite the fact that it's getting meh reviews and doesn't seem to have much buzz around it, I'm not going to be completely pessimistic here for a simple reason: there's really nothing else out to watch.
Looking at my local theaters, your options at all three this weekend are Cap 4, Paddington in Peru, Heart Eyes, Love Hurts, and Dog Man. Of those, two are kids' movies, one is a slasher, one is an action romcom (with even worse reviews), and one is Cap 4. Only two are new releases, Cap 4 and Paddington. So if you're just looking for some basic action movie to watch and you're not into horror, it's pretty much gonna be Marvel. It'll probably be number one at the box office, though I will laugh my ass off if Paddington does better than it (it honestly should, the Paddington movies are great).
The real question is staying power. There's not a huge number of big movies coming out over the next few weeks, and those that are might not really cannibalize the same audience. I'd say the closest would be Mickey 17 on March 7, then Novocaine on March 14. That means it should have a couple weeks without much major competition, though it's hard to say for sure; maybe a bunch of people would rather see The Monkey next week than Cap 4.
So my prediction is that I don't think it'll be a bomb on par with The Marvels, but I think it'll probably still be a weaker entry overall, especially as word of mouth gets around. I have doubts it'll break even in the end, no matter how much Disney tries to lie about it having a "low" budget.