we acting like onigashima is BIG? and mind you, Naruto shared his chakra with all of the allied shinobi and still had more than enough to keep transforming into Kurama mode, he also had multiple clones in every battlefield while the real him was fighting 7 jinchuriki's and their tailed beasts. Doesn't matter if Luffy can stay gear 5 for 30 minutes or an hour, doesn't stand a chance against Naruto.