>>281486477
Zoro and Sanji might fight Demon Dorry and Brogy but will lose. It's up to Nikaffy to fight them and cure them of Imu's control most likely imo. Zoro and Sanji also have clear similarities to Sommers and Killingham, so they might fight them instead, or they'll be stepping stones before fighting the much larger fish Dorry and Brogy. Hajrudin might also fight and defeat the Holy Knights, the match ups are kinda hard to predict atm.
1.8 billion would be way too low for demonic Dorry and Brogy imo, I just don't see the case for Oda doing something like that. I agree with you on power levels in relation bounties, but I think it was clear that Oda gave them bounties based on their base forms after what they showcase in Egghead.