But, even with unlimited stamina, Luffy cannot possibly think that Gear 5 is enough for him to beat the top tiers of the One ...

One Piece fans believe Luffy’s base form is on the level of a Yonko, but Kaido had already disproved this long before Kizaru's recent clash.

Luffy's acquired plenty of powerful forms which have come in all sorts of weird shapes and sizes, some looking much better than others.