Lucci was a low diff for Luffy, just base skills and he smacked him around, I count 3 hits who knocked out Lucci.
Time pass and Lucci get up again, overall the fight end with a low diff for Gear 5 Luffy, without even trying he stomped him.
I expect a crazy good battle with Kizaru, I wouldn´t be surprise if Kizaru also show adv CoC, since Oda saved adv CoC/Adv CoA of Luffy for later, I think we will see a amazing battle, Kizaru will put some good name for the Admiral team, I don´t know if he would get defeated in the end, but im sure Kizaru will get massive hype, can´t wait for Luffy vs Kizaru, another world class battle is waiting for us.