Sanji ran from wherever he was to save Nami. This is the speed I prefer. May seem convenient but honestly when characters have super-speed and observation haki, no reason they shouldn't be able to save the day. Sanji sent that dude dazed and hurling, followed by an explosion. Great to see. Sanji clearly has the means of harming lunarians and I can't wait to see him finish off S-Shark.