I agree with the general sentiment and I hope Jack loses to a combo attack given all the firepower on Zou. Gear Fourth's extreme wear on Luffy's body already keeps it as something of a last resort. However, I'm compelled to point out that Doffy was hit by several Gear Second attacks and was frequently knocked back by them. Only Red Hawk did any significant damage to him though.
Side note, I'm curious as to how Luffy will adapt some of his other attacks to Gear Fourth. In particular, some form of Gatling (Polar? Tiger? …Buffalo?) would be interesting to see and likely incredibly devastating if he can keep the enemy from getting blasted out of range.
Gear 4th Gattling barrage of punches sounds like a danger even to likes of admirals. But at same time I wonder if more attacks and getting more tired shortens duration of Gear 4th.. By all means Gear 4th should be last resort thing as you wrote.. I hope it wont be overused as Gear 2nd was later on during first half of story.
Gear 3rd Grizzly Magnum packs enough punch for Cesar to fly at high speed through like half of island.. And even Pica avoided it in his gigant form.
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Its size is also perfect for Jack. Him getting smashed around by Law, Zoro and Luffy would be very satysfying to see after what he did to Minks.
Luffy seems to base a lot of his moves on artillery with animal references especially in Gear 4 since it is Haki heavy.
- Kong Gun
- Rhino Schneider
- Leo Bazooka
- King Kong Gun
And Jack has ANCIENT ELEPHANT Zoan DF powers. As I've stated Luffy will use AT LEAST these moves against Jack because they directly correlate with the elephant theme:
- Gomu Gomu no (Thor) Elephant Gun (Gear 3)
- Gomu Gomu no (Thor) Elephant Gatling (Gear 3)
- Gomu Gomu no (Thor) Elephant Rifle (Gear 3)
- Gomu Gomu no (Thor) Mastodon Double Rifle (Gear 4)
The Thor references will be a nod to the Minkmen and Electro. The Mastodon Double Rifle is a real life gun. Mastodon and Mammoths look very similar and are under the elephant umbrella. Luffy also doesn't have a name for his unseen Gear 4 Rifle move yet. Gear 2 has Hawk(haki) Rifle. Gear 3 has Gigant(no haki) Rifle which would probably be an Elephant(with haki) Rifle in Gear 3.
Jack is a BEAST. A tank with days worth of stamina. Luffy is going to have to hit Jack really fast and really hard and a lot to even phase Jack. Plus Jack probably knows how to awaken his DF powers which only makes Jack even more fearsome. I think Luffy has been displaying a new move or two or more each arc so why not here as well? Luffy was training against large animals so this fight will be right up Luffy's alley.
