First since Haki training Luffy got 3 PU's IdCoA, AdCoC and G5
Second Sanji's Ifrit Jambe is the consequence of Exoskeleton like KOH is the consequence of AdCoC
Third Luffy's technique PU enhanced by his PU is Bajrang gun
For Sanji it's Ifrit jambe
Second Sanji's Ifrit Jambe is the consequence of Exoskeleton like KOH is the consequence of AdCoC
Third Luffy's technique PU enhanced by his PU is Bajrang gun
For Sanji it's Ifrit jambe
Learning Adv. CoA, Acquiring Enma & Raid Suit are things that happened before Raid Started
Ryou Training is what led to Luffy realizing he can Coat his CoC
Enma is what led to Zoro unlocking his CoC
And Raid Suit is what led to Sanji awakening his Germa Genes
So Udon Training = Enma = Raid Suit
And Adv. CoC = KOH = Exoskeleton
KOH is basically Zoro's Swordsmanship after Unlocking Adv. CoC
But Ifrit Jambe is not the same for Sanji, because he still used Diable Jambe & Hells Memories "After" he gained Exoskeleton
These Three (Adv. CoC, KOH & Exoskeleton) were Huge Development for Monster Trio & the First & Major one they had during the Raid
After that, Luffy developed even further & Oda introduced us to Gear 5, and the same thing happened with Sanji where he showed New Flames
But Zoro showed nothing after his Adv. CoC Swordsmanship
And think about it dude, Blue Flames are Hottest Flames, Gear 5 is Peak Power of Luffy's DF
But Zoro still haven't showed his Peak, Forging Black Sword is how Peak Sword looks like & Asura is Zoro's Peak Swordsmanship
He still haven't showed those