ryuma was paralled to Luffy by wano people , so stop dreaming
Luffy/Joy Boy was paralleled to Ryuma, a prominent Samurai from Wano. To me, this is Oda indicating that Joy Boy/Ryuma were on a similar level of power/prestige.
Oda is literally saying: Joy Boy is a hero who rivals the Sword God. Who is a Samurai who has "rivaled" Luffy through the series, and is said to be around Luffy's offensive power level?
Oda is comparing Zoro to Ryuma intentionally. The son of Ryuma, Zoro, who was always lost, will find his home is Wano, and slay a dragon just like his dad did.