Narrative is giving the same attack not the same power
Yamato using Thunder bagua makes her equal to Kaido ?
Uta said Yamato Thunder bagua wasn't at all close to Kaido's
so let just wait and see Saint Shanks attack on screen
if not higher, it not gonna look weaker than Roger's attack
Roger attack didn't KO Oden
Saint Shanks attack KO Kid
so don't day dream about this looking any weaker