Zoro is my darg but he can’t compare to sasuke, he was an actual deuteragonist that got fleshed out and who’s journey and choices was central to the plot of Naruto.
Zoro is a support character, who’s pretty much static. There have been glimpses that made us a fan of his, but overall he’s suffering from the same problem as every strawhat but Luffy.
But then again being immortalised as a static stoic tough guy is probably the safer route because this what happens when we let Oda cook: