I really hope it beats Star Wars: TFA but I also see it slowing down a lot from this weekend onwards. Deadpool 2 is coming out May 18th and then Solo: A Star Wars Story comes out a week later. Solo should manage at least 1 billion WW (Though I assume it will be the lowest grossing of the new star wars movies) and if the reviews and word of mouth of Deadpool 2 are as good as the original it will come close to 1 billion WW as well.
Already two movies at 1 Billion+ WW. I wonder how many we'll have by the end of the year. So far the highest was 5 back in 2015.
Not sure about Deadpool 2 though. It will surely be awesome like the first, but it's clearly not a movie for everyone like Avengers. And isn't it R rated in some countries? The first one did less than 800M, I'm even surprised by this number actually. I thought it would be lower.
Solo will surely get the billion, but it might be low. It doesn't seem to have a lot of hype around it, and the last SW movie being very controversial won't help them to keep huge numbers for each new movie... Anyway, I'm not sure those movies will lower the result of IW. Fans of comics will see IW before going to see DP2 too later, rather than the opposite I guess.