@Sasaki Kojirō Giant luffy was burned who was comparable to Dragon Kaido in size who is 5 times bigger than a average giant or something. Kaido's giant Boro breath negs GB
This is honestly why the Marines are disgusting useless fools. Luffy, despite being weaker than plenty of Admirals at the start of Wano, was willing to show up to fight, and defeat Kaido.
The Marines only fight if they think they can overpower their opponents. They're bullies. Luffy challenges people beyond him, because he's unwilling to compromise justice like the Marines. The WG knew what Wano was like for years, and people like Sengoku and Akainu did nothing about it. The people who love "Justice" just let Tama starve as her parents were murdered.
Luffy took multiple Bolo Breaths from Kaido, Green Bull was getting hurt my Momo. Weak shit like Green Bull can't beat Momo, Yamato, and Luffy.
Green Bull said it himself: the Marines are too scared to show up to Wano to fight Kaido. These scared trash were only willing to show up after Kaido got beaten, to pick on a weak nation that was recovering.
Big Mom was willing to attack Wano when Kaido was at full power to get to Luffy. These weak-sauce Marines don't have the kahunas of a Yonkou. The Marines and WG should send Shanks a Thank-You-Card for stopping Kaido from stomping them all into dust during Marineford.