Most likely a Ancient giant Kid..
Sasuke was weaker than Naruto, and they were rivals.. Luffy and Zoro are not, Zoro has a rivalry with Sanji though..
And i meant Zoro has less than half of Luffy's panels number..
Zoro is not Ryuma, it's the same Luffy having similarities with Joyboy.. History repeats itself and will is passed on over 800 hundred ago void century, that's just how One Piece works.. If Oda made a monster Joyboy series before One Piece, it wouldn't be Luffy..