Seems like it'll outperform all other Fantastic Four movies, even adjusted for inflation, even with all other fantastic four movies releasing in a pre-COVID, much more theatre-focussed market. On top of potential Marvel and/or super hero fatique. Etc.. seems.
The last time a Jurrasic-Dino movie and a Fantastic Four movie released in the same year was 2015, and the gap there was nearly 600 Million US domestic between them. Now it's barely 100 Million between them. Obviously the "best" Jurrasic World vs. the worst FF movie, while now it's also serious Dino-fatique vs. a FF movie driven by MCU (battered as that brand might be).
Still, about as good as you could expect, I guess?