The difference between "Im not zoro" / "You aren't the zoro you are pretending to be" and "he was pretending not to be zoro" is equivalent to the difference between "I think I understand the meaning" and "you really understand it". This is the reason why we repeatedly tell you "show your translation". The attitude "OK, I think I understand the meaning now, so no need to translate it anymore" doesn't (well at least always) improve your reading comprehension.