Dom and Sub isn't about who has more respect. Both are respected equally (or should be ideally). It's just about who prefers to take the lead. Some people like it when their partner guides the experience, and others prefer to take charge themselves. It should also be noted that being a sub does NOT mean you have no say. There is still communication during the relationship; a good dom learns what their sub likes and will tailor the sexual experiences with that in mind.
Of course there are extremes that ARE about who has more respect, like humiliation play, but that's more of an actual fetish than normal dom/sub behavior.