I think Infinity War’s gross is outstanding and should be celebrated no matter what. But what makes predictions go overboard and the disappointments is because Black Panther grossed too much, just too much for Infinity War not to replicate. Had Black Planther didn’t reach that bombastic levels of North America gross, Infinity War’s numbers would be celebrated a lot more.
Also as I’ve said a week before, 700 million is still not guaranteed because it’s rare for CBM to do 3x its OW. And IW is like the most anticipated Marvel movie so yeah, it’s hard for it to reach long legs