This is the language map of India. North & South. Most of the film cater to one of two. Baahubali was first to breakout in both and realise true potential of India.
Those two were Pan India films appealing to both South & North. Pathaan is just Hindi film with limited bizz in South India.
Pathaan will become highest grossing Bollywood film.
Imagine East Coast spoke French & West English. A French film may be biggest grosser in East (say that's Pathan) while an Avengers does big enough in both to become bigger at US level.
Yes it will beat Dangal Nett (387) with ease and should also go over Gross (511) numbers. KGF 2 Hindi (428 Nett, 514 Gross) is a good target for but I want 475 Nett & 570 Gross.