Sometimes i think if you guys are the biggest trolls ever hahahah.
Zoro is a cool character and one of the main buddys of the protagonist, but the story is about how Luffy find friends, rise to the top and become the strongest pirate, becoming even bigger than legends like Roger and WB, of course Zoro will be one of the strongest by the end of the series, and will be able to fight alongside Luffy, and there's no problem in having he as your favorite character, but you guys are becoming obessesed with this subject of powerscale, every day there's a bunch of topics created to say the same thing on this. Of course Zoro character was created to be the second strong of the crew that will stand together with Luffy in fights.
With this behavior you guys are becoming the One Piece version of the Uchiha fans, that transform anything in a childsh monologue 'bout how their favorite character is the strongest, and that if someone say anything different you become triggered and insecure. Its kind of sad.
A lot of people like Zoro, he is one of my favorites, but its not just because i like him i will enter in a denial behavior and start to say things that have nothing to do with his character, i like him as the character he is, there's no need to create a headcanon.