Then why he never beat him easily if it was that simple. No reason to hold back on someone to take your weapon from you.
What about when Wicca stole ALL of Zoro's swords? And do you remember what Wicca's explanation was? She said it's her right to take whatever she wants and that Zoro should just suck it up. How come Zoro didn't just flatten her like you think Zoro operates as a murder machine of some kind?
So when Zoro starts fighting Gyukimaru and then Gyukimaru give a relatively reasonable explanation about the sword belonging to Wano, Zoro listens to him because he's jot a rampaging maniac and says he doesn't care about Wano's traditions and then Gyukimaru says that Ryuma made Shusui black AND THEN Zoro stops and is interested in what Gyukimaru is stop saying but then Kamazou and Hiyori arrive. So why didn't Zoro just bulldoze this man without listening to anything he had to say? Because that's not Zoro's character. Pretty simple right? And then Gyukimaru actually said somethin Zoro was interested in.
Later on Zoro is of course still interested and is seated on top of Gyukimaru and says "is your life worth dying for for the sake of this sword? Just give it up" and then Gyukimaru refuses and the Kawamatsu arrives and says they are just making a fuss since they don't want to kill each other so the fight will go nowhere.
And then later Hiyori manages to convince Zoro to give back shusui and that's the end of that.
I mean, what exactly did you read from all this? That some EXTREME DIFF fight was happening and Zoro was ENRAGED like a mad man and Gyukimaru was some god tier tank of a man?
TF were you even reading dawg?