yeah Zoro learned Ryou pre-TS lol.....but didn't use it against Enel, Kuma, Kizaru even as a desperate attempt....Ryou is wano term for haki....as simple as it....only one who has shown haki pre-TS "canonically" is Luffy....direct evidence given by Blackbeard and many other bigwigs not some random fanmade evidence....but I agree with you on one thing....Zoro is still a battle genius.....
Lol...you are saying Zoro beats Luffy if he is not a main character....that is your "legit" argument....
Should I also say "If Zoro is not secondary main character, he could have died in thriller bark"....