User blog comment:Ghmorello/Chapter 905: What A Load Of Green Bull!/@comment-35359957-20180525082848/@comment-2600:8807:C00:AD40:689B:1329:4D9F:86D4-20180528010248

Wouldn't be surprised if Kaidou crushes Luffy head-on and sends him and his crew retreating, thus forcing them to improve some more (Like everyone devolop Haki), practice new skills. I mean, Luffy couldn't take Big Mom on, and it's heavily implied that Kaidou is even stronger then her. Plus, with how Shonen conventions work, the other 2 Disasters should be stronger then Jack, and he had a bounty of 1 Billion while the "weakest" member of the Sweet Commanders had little over 800 million, so logic dictates the next Disaster bounty should be equal or higher then Katakuri, who has been the toughest fight Luffy has had to date, with the final one being even higher then Katakuri, which will make it a Hell of a time for everyone included even if they had the Grand Fleet backing them up.

All this assuming, of course, Oda doesn't give Kaidou some BS weakness like Big Mom had that is exploited for a cheap victory.