I feel we're past low diff tbh, especially if Zoro is clearly using KOH.
Lucci is not weak, a high high tier for a reason, but it would clearly show that Zoro still need to grow up and guys like Shiryuu and even more admirals are still leagues above Lucci.
I mean three simple G5 moves knocked out Lucci, the hit what Kizaru took would put Lucci into sleeps for days/weeks...
Zoro has a great AP, with KoH he shouldn´t have any problem with Lucci. But if he has, then the gap between Luffy and Zoro seems larger right now as I imagine it...
I mean Kizaru, dude didn´t used yet awakening...
Base Kizaru>>Awakened Lucci...