That’s Luffys fault isn’t it?
He ain’t underestimating Kizaru at all, he’s probably using all but Oda isn’t drawing it out.
Now think about it, wouldn’t it be stupid from Luffys part to STILL be holding back that much? I mean he IS being bullied
not to mention Luffy was clowning Kaidou at the start and we didn’t see AdvCoC when he took Kaido for a spin like a jump rope.
See how that works? Not all the time will it be drawn out