Garp clashed with Rogers sword just fine, why cant Luffy protect himself with ACoC to solve that like him?
Because Roger doesn't have that kind of Sword cutting ability. He spams Haki through his sword.
What attack of his actually cut deep? Except for maybe the Haki mass attack?
Roger uses AdCoA (Emission)+ AdCoC.
I bet Oden attack would land on Garp. Garp Haki isn't saving him there.
Haki defense have two weakness,
- Stronger Haki (Example not needed that's canon)
- Force bigger than Haki defense
For this, Luffy got hurt by arlong teeth even while he was using haki, does that his haki is stronger than Luffy? No.
But the sharp teeth penetrated Luffy regardless.
That's why Oden would Like severaly damage Garp unlike Roger, he just doesn't have the skill for it. Or his swordsmanship works different.
Oden gave Kaidou PTSD. That's Lethality + AP of sword cuts.
'Oden two sword style is greatest there is' there no evidence to prove it otherwise.