I think it will do fine (not knowing the budget)
I mean, how many people other than comic fans or the media know this is another Marvel Studios movie? I mean I know they are not shying away from telling everyone but I am sure not everyone knows.
Out of those that do, how many care?
I mean, I don't keep track of how many movies Castle Rock (speaking of King) makes.
I think most non-comic book people will go into this because they want to see a humorous sci-fi flick not because they enjoyed Thor and are keeping up with Marvel Studios. As for money, I think it will do fine. Better than the average humorous sci-fi flick I would wager.
That is not to say it isn't important to Marvel. It is. If this movie does bomb they take a huge hit for making future, off-the-beaten-path movies. But if this, like I suspect, knocks it out of the park with critics (regardless of money made) they will be like Galactus ... almost unstoppable.
But to answer the question -
I think, if it falls in the 140 or 150 million production cost area, it will make about 165% internationally and makes at least 120% here. About what the first Cap movie has done.
Or at least I hope so.