Tbh it's interesting how Luffy need to train under Rayleigh, learn Future Sight, Barrier CoA, Internal CoA, CoC Coating, Awaken his DF & unlock Gear 5 to finally be a Legit Threat to Kaidou. While Zoro only with Mihawk's Training made Kaidou & Big Mom afraid of his Full Charged Attack
Do you know what's more interesting?
Luffy have Double-Layered Eyes now just like Imu
And Zoro gonna turn his Sword Black just like Ryuma
Mihawk had them both since his Introduction in East Blue Arc