Don't mistake ACoC with KoH. Zoro can use ACoC without KoH mode.
In all fairness, if the thread was asking which powerup gave a better AP boost the answer would be KoH. Zoro enters a mode where he can pour a shit ton of haki (both CoC & CoA). Goofy's haki gets stronger with G5 but he needs to increase his fist size at the cost of maneuverability.
However overall Gear5 ridiculously outmatches any form of powerup we've seen so far
-Physical strength boost
-Speed & reaction time: fighting with this level of freedom is probably the most important aspect of this awakening
Durability & Endurance: Goofy was near dead seconds ago, this could be attributed to Kaido's shit haki but who knows
Though his weakness to hakiless devil fruit air slashes remains intact
G5 Luffy vs Lucci doesn't change a thing, maybe we should consider that base Luffy would've lost the clash lol