Bajrang Gun is, by far, the strongest technique that Luffy has developed in Gear Fifth so far. This technique sees and makes use of everything that he has got. While using Gear Fifth, Luffy creates a fist big enough to dwarf an entire island and retracts it just like he does in Gear 4th.
Gum-Gum Pistol. Gum-Gum Pistol has become Luffy's signature attack throughout One Piece. Luffy typically pulls back his arm for this attack and propels it forward to deal an incredibly powerful punch.
Gomu Gomu no Jet Gatling. Gomu Gomu no Jet Gatling (ゴムゴムの JET ジェット 銃乱打 ガトリング , Gomu Gomu no Jetto Gatoringu?, literally meaning "Rubber Rubber Jet Gun Battering"): This is Luffy's strongest technique in Gear 2 at the time.
Gomu Gomu no Pistol (ゴムゴムの 銃 ピストル , Gomu Gomu no Pisutoru?, literally meaning "Rubber Rubber Pistol/Gun"): Luffy's signature attack; he stretches his arm back then throws a devastating punch. In other words, it is a standard straight punch, augmented with stretching.
Bajrang Gun is, by far, the strongest technique that Luffy has developed in Gear Fifth so far. This technique sees and makes use of everything that he has got. While using Gear Fifth, Luffy creates a fist big enough to dwarf an entire island and retracts it just like he does in Gear 4th.
When he was a child, he was afraid when Garp would find out about his dreams of sailing as a pirate. He is wary of Nami's temper, as he thought whoever wanted to marry her is brave.
Is Luffy Gear 5 the strongest? Yes! Of course, Luffy's Gear 5 is the peak of his colossal powers. He can literally do ANYTHING with his devil fruit powers right now, as he transforms into the Sun God Nika when using Gear 5, making his devil fruit the strongest in existence so far.
In addition, Luffy still has his standard weakness to cutting attacks.
3 Gear 4: Snakeman
All of Luffy's attacks in Snakeman are ranged and hit the target in an unpredictable fashion. The weak point of this form is that it sacrifices the extra defense that Gear 4 offers for additional speed.
Buggy is the captain of the Buggy Pirates and one of the Four Emperors of the Sea. A person who has not met Buggy can easily be fooled by his titles, but those who have know that he is one of the weakest characters in the series.
Naruto Possesses Massive Firepower
In his base form, Naruto is immensely strong. However, when he combines his Six Paths Sage Mode and his Kurama Mode, he is stronger than anything Luffy will ever face. Even if Luffy were to get 10 more Gears, he still wouldn't be strong enough to stand up to Naruto in this mode.
1 Worst: Luffy vs Foxy
Foxy is someone who relies on cheating and trickery to win, making his level of actual strength not that impressive. Foxy was overconfident against Luffy even though his bounty at the time was significantly lower than Luffy's. He tried to steal Luffy's crewmates with a Davy Back Fight.
Luffy's signature attack is the Gum-Gum Pistol (ゴムゴムの 銃 ( ピストル ) , Gomu Gomu no Pisutoru), a punch which he learned during years of training.
Gear 10th Luffy is Luffy's ultimate form from the upcoming speculative fan-made sequel to One Piece, Son of the Pirate King. Luffy has continuously trained his haki and Devil Fruit powers during his time as Pirate King until he achieved this gear.
The concept of power up Gears has been a core part of the One Piece franchise and allowed Luffy to take on the most difficult of foes. Fans speculate Gear 6 is inevitable – and with the series winding up to its conclusion, it could play a pivotal part in the final conflict.
Naruto's attacks are strong enough to destroy gigantic meteors with relative ease. He was able to nearly split the moon in half with a single punch. Considering his accomplishments, Naruto should have absolutely no problem defeating Gear 5th Luffy.
Kaido did in fact lose to Luffy's Gear 5 at the end of the Wano Country arc. However, keep in mind that he withstood multiple waves of strong enemies before this final encounter. Luffy was also completely worn out after the fight and fell into a coma for about a week.
His body gained freedom and durability far surpassing those of his previous Gear transformations, to the point of becoming somehow cartoonishly malleable. Luffy was also enabled to increase his body and limbs to such a massive size that he could grab and manhandle Kaido despite the latter's enormous size as a dragon.
With its powers, Luffy was able to topple even Kaido and if he could defeat the man who was the Strongest Creature Alive, he can certainly defeat Shanks as well.
[One Piece] Luffy Gets Married with Hancock_2.
Throughout his journey Luffy has made strong bonds with numerous women. At least two have fallen in love with him, Alvida and Hancock, whilst another two have become enamoured with him, Rebecca and Shirahoshi. Nami, Robin and Vivi all share close and deep bonds with Luffy and have become some of his closest friends.
Given the evidence, Luffy's IQ could easily be anywhere between 90 and 130.