Because he and kid failed to push kaido to a hybrid, they probably lost to dragon kaido or base kaido in their confrontation in the past.
And they just studied the weaknesses and strengths of DRAGON kaido according to killer and kaido, so kaido going totally into a form not seen now, his amazement makes sense.
And they just studied the weaknesses and strengths of DRAGON kaido according to killer and kaido, so kaido going totally into a form not seen now, his amazement makes sense.
Post automatically merged:
Zoro fulfilling Oden's will is insignificant to Luffy becoming PK. One of Luffy's requirement of becoming PK = surpassing Kaidou. So yeah going by that narrative, Luffy will be new WSC to replace Kaidou, before playing ping-pong with BB over WSC-WSM status.