Inu beats Jack barring any hiccups imo.
Inu wasn’t inferior to hybrid Jack from what we saw. Hell, he even slammed him in one of those few panels we got of the fight. So even if we wanted to give the benefit of the doubt to Jack, he has a minimal advantage against Inu at best in hybrid. Same cannot be said about Sulong Inu tho. You could literally feel the apprehension from Jack immediately Inu went Sulong. Jack fears that shit

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If Jack stands a chance of winning this fight it’d be to endure till Inu becomes unable to move after extensive use of Sulong which is possible but Jack himself is pretty beat up, so not really sure if he will be able to take damage for a prolonged amount of time.
If Oda is to write Inu die, then that is the route he goes I feel
