No, I highly doubt Zoros CoO is ever going to be above Koby’s. Pre Skip at MF Koby was able to sense emotions as soon as he unlocked CoO, and not jus close by. He was sensing damn near everyone’s emotions
Conversely Zoro is a CoA specialist and appeared to unlock some bastardized version of Ryou back in Alabasta. And as we see now, he’s got very strong CoA. And most people expect him to be one of tha best CoA users at EOS
So him having CoO better than one of tha main people who also has better CoO feats, portrayal and hype than him makes no sense