I never understood why some people are stubborn as fuck on this shit... Just fucking admit it was dumb and move on.
Do you realize the amount of asspulls Oda has to do in order to get ALL 6 Straw Hats wins here? The funny part is that we know X-Drake won't even be part of the Tobi Roppo, while Black Maria/Sasaki might defect as well.
Ulti/P1 seem like the only loyal ones and Izo/Kiku would be more perfect than anyone to defeat them.
If Sasaki/Who's Who fight, we have Kawamatsu (swordsman fishman like Sasaki), Ashura Doji, or even Denjiro that are perfect.