In zoro fan mind: "Monosuke is stronger than Kid confirmed"
Stop coping. I didn't say anything about Momo being stronger than Kid. I was comparing Kid's harpoon attack to a bit from a dragon equal in size to Kaido.
Kid's harpoon attack wasn't strong or powerful. Being used against Big Mom doesn't make it powerful or stronger than Momo's dragon bite. There was nothing impressive about that attack. Look at the situation it was used in against Big Mom. It was just used as a distraction.
The flaw in your argument is you believe Kid attacks must be stronger than Momo's attack because Kid is stronger. That's not how things work. An attack from the stronger character is not automatically stronger than an attack from a weaker character. You have to look at each individual attacks.
I like how you explicitly ignore the context here.
Big Mom’s durability is tied to her mental state, and when she’s unstable her defenses are down, hence the whole plan to assassinate her when she goes berserk. Hell even Bege says it in the example you showed lol.
Big Mom has had as much hype if not more than Kaido when it comes to durability, and also better feats like no selling Kid’s nails while Kaido was yelling from the top of his lungs from Momo’s bite.
It doesn't matter if her durability is tied to her mental state it still doesn't have more hype than Kaido's. Her body was never hyped up to be invincible. It was described as an iron balloon or steel blimp. Zoro cut through a character (Das Bones) with a steel body pre TS. Then cut and damage a character with a more durable steel body during Thiller Bark. Zoro would easily cut and damage Big Mom.
We have seen big mom hurt and injured by non-haki physical attacks. Kid hurt her with his giant metal bull and by attracting steel beams to her body.
Kaido's body was said to be invincible. Excluding internal attacks, the only type of attack shown to hurt Kaido are attacks with powerful Ryu (CoA haki) or CoC haki. When I say hurt I mean cause Kaido ti bleed. Not just made him yell in pain. Kaido wasn't hurt when he jumped off Skypiea.
If Oda wanted Big Mom to be more durable than Kaido he would have had her take power ryu attacks from swordsman with no damage or take haki attacks from Luffy with no damage. She used haki to block WCI Luffy G4 attack.
The characters with powerful ryu (haki) faced Kaido. Zoro later fought a character with greater durability and defense than Kaido and Big Mom. While Kid, the character without powerful haki, faced Big Mom. Kid hurt Big Mom without powerful haki.
It doesn't matter how you look at it, Oda has made it very clear Kaido is much more durable than Big Mom.