I was rereading the Dressrosa and noticed something about Zoro. People say his COO is poor however, he was able to locate Pica's real body whereas Luffy seemed to not be able to do so.
If you look at the panels below, Zoro told Luffy that the statue's head and the body were just rocks and not Pica's real body. Luffy then responded with a huh?!. Showing his confusing and disbelief.
Zoro was able to sense this but Luffy couldn't. He was also able to sense where Pica's realbody was whereas Luffy was suprised to see Pica's real body
I believe this is just Zoro's ability to sense the breath of all things. He displayed it in Alabasta and using it, he could be able to sense the breath of the falling rocks, locate his sword under rocks and Mr.1's steel body's breath.
Using this ability, he can sesne when the Pica golem is just rock as it only has the breathe of rock and when Pica is inside of it, it comes alive and has Pica's breath in it.
People always sleep on Zoro's coo feats.
Another instance of his COO is when Wicca stole his sword and located her. Luffy, Sanji didn't even sense Wicca and shusui.