Even if you look at a narrative point of view, it wouldn't make sense to put them on the rooftop if they aren't able to hurt Kaido, people like @nik87 keep saying that they'll be hypetool but they are the same that think that Zoro>Luffy so their word doesn't have that much value to me

On topic: As mentioned, I dont think anything is significantly different about either Kidd and Killer.
The circumstances are on their side this time and instead of 2 traitors, they got 3 capable combatants joining them.


