At the end it is also a question of rank, because a newbie doesn't know all the forum yet and he may be in difficult to moderate it (that's obvious).
Like I said, a person can be a moderator if he is fit as a moderator.
People like full member and above have a high chance respect the other low ranks (this is only a personal opinion).
You have a valid point but I think title "staff" is more valuable than title of "rank".