The slavery objection's logic: same reasons for submission = same rules apply

Keener writes: 'if one is binding in all cultures so is the other' and 'what we grant today concerning slaves...we must grant concerning wives.' Mike agrees with the conditional: IF the biblical justifications for wifely submission and slave obedience are the same, then the rules should apply the same way. The key question becomes: are the reasons actually the same? Red light/green light analogy: if you stop at red and go at green for the same reasons, you must do both.