So, let's go over all of Luffy's various transformations and take a look at all of their strengths and weaknesses. Despite being one of the strongest Marines, Kizaru is still quite underrated ...
As Luffy and the crew were attacked by several marine warship they were forced to use Coup de Burst to escape. Crash landing on an island the crew decided to explore while some repairment is made.
It’s not until the both of them get a moment to sink in all of the damage they have taken that shows just how dangerous each of Luffy’s moves are despite how ridiculous in concept they seem to be.