At this point it feels like you just have a agenda to push and not reading lol
Question 1:Pica realizes zoro can cut up his stone so what does he do??
Answer: Rely on his haki he feels like he is invincible infused with haki not his df power
Question 2: Why did pica feel he could beat zoro with haki instead of using his df power?
Zoro Answer: Pica assumed his haki was stronger than zoro and it was not so he loss.
Do you not think pica was aware that his df was useless against zoro??? He literally tells us his df power is no match for zoro right before he infuses himself with haki. Do you think pica is nerfing himself or something????