King destroys totland. Without BM the BMP don't stand a chance. Of course some are trying to downplay King's power by claiming he is a gimmick. He's not Katakuri who's the walking definition of a gimmick.
King's flame mode power doesn't go from high durability/defense to low durability/defense in flameless mode. It goes from high durability/defense that's beyond Kaido's durability to slightly lower durability to at and slightly greater than Kaido. All he's doing is exchanging higher durability for slightly lesser speed and vice versa. The same Zoro that cut and scarred Kaido struggled to cut flameless King.
Yonko G4 Luffy struggled to damage and couldn't beat S-Bear because of King's DNA. That's a much stronger Luffy than the one that beat Katakuri. Luffy had help against the seraphim. King is stronger than the Egghead Island seraphims. If SH other than Luffy and Zoro beat seraphims in the future that means they are stronger than yonko G4 Luffy and beyond YC1 or high tier level. That doesn't make King look weak, that makes the Straw Hats look strong.
The funny thing about this scene is so called gimmick King stopped BM and her crew alone.
Some want people to believe they could have stopped King without BM. In reality, they couldn't even stop King with BM.
To everyone wondering why didn't King go to Totland and take it over if King is so strong and unstoppable. It's the same reason Kaido didn't go. Yonko and their crew typically stay in their territory and don't go to war with other yonko. It's that simple. I wonder how many people are going to claim all of BMP can hurt Kaido since they seem to believe they can hurt a character with higher durability than Kaido.