Despite being no match for Piccolo in their sparring though, Gohan was able to defend himself somewhat for a short while against a Piccolo likely far stronger than the one from the start of the arc and gave no indication of pulling his punches at all, which ought to place Gohan at least far above the 200 battle power threshold. That said, Gohan ought to oneshot Chaozu as long as he can remain focused enough to fight effectively.