If you read the spoilers there is no New application.
And yes Gaban has Low AP , Even Sommers blocked some of his AdCoC Strikes.
I disagree about that:
Gaban asks Luffy to pay attention at “how you use Conqueror's Haki” and also says that the enemies are definitely not immortal. Then Gaban looks at Zoro and Sanji.
It's clear Gaban is not talking about the regular use of CoC coating because he wouldn't mention to Luffy how he has to pay attention at how to use CoC haki.
So what? Sommers is no weakling at all and how does it matter that he was blocking some hits when Gaban negged him at the next panel? Gaban didn't even wield his dual axes, only one axe.
Gaban has shown neither of them. Luffy foight a seraphim for 4 hours , what was the conclusion to that.
Rather Attacks blocked by sommers.
1.) King changes in his speed mode every few minutes, even when Zoro was factually dealing damage to him.
2.) We have no idea to why Seraphims were permanently keeping their flame mode but considering that they are modified cyborgs containing DNA from many races, I am sure there is something which grants them permanent invincibility.
3.) Gaban cut a huge tower in half which easily dwarfs ordinary mountains. Don't forget, even a room was as large as a town since everything is huge in Elbaf. And dude has no AP feats when he cut Sommers' hardened weapon and bypassed his regeneration? You know nobody of the strawhats were able to break free from Sommers DF (or was it Gunko? Idk)?