Imo Scabbards will push Kaido a little bit more... maybe even deal him a serious wound before getting trashed, and then Luffy will step up.
Kaido's battle against Scabbards reminds me of Dbz, when the protagonists decided to fight Frieza... Vegita, Gohan, Krillin amd Picolo held their own against each form of Frieza. Even injured him a little, until he transformed into his final form. Then they knew the true power of Frieza and how they never stood a chance.........
And when all hope seemed lost, Goku steps up to fight him. And although initially it seemed that he was a match for Frieza, he starts to loose and had to uncover a hidden power and his true potential to defeat Frieza.