NOT a statement of inferiority. May be referring to physical makeup. Although Kathryn is not as physically strong as I am, I know she is my superior in many areas. By marrying the wife has accepted the position of submission and therefore vulnerability. Consequently, Peter is saying to the husband - don't take advantage of or exploit her weakness .
Honor carries with it the idea of value.
Mark Twain said he could live 60 days off of one compliment. God won't respond. God's standard for marriage did not change from Adam's time until Paul's day - and it has not changed since. Parents can love and care for their adult children - but they no longer control them once they are married.