I think people are reading the early spoilers wrong
I think once the scene cuts back to Luffy vs Kizaru, it's gonna be implied they've been fighting for a bit and trading blows
then Luffy is gonna get kicked and the scene will cut away again
at the end of the chapter the scene comesback to the fight, implying more time has passed, and then Luffy enters Gear 5 awakening the Robot
people are reading it like Kizaru one shot G4, and i don't think that's what happened
you guys should wait for raws