Being "successful on your own" doesn't mean being successful without your husband. You and your husband are one. His success is your success, and yours is his; there is no distinction to be made, and neither of you are ever "behind" or "below" the "other", because you are one and the same. Being dependent on their husband is empowering for many women, and does equate to independence if he is the only "other" one she depends on.
Besides, success is subjective, as different people want different things in life. For some of us, our marriage is our success.
I am too empowered to conform to your kind of empowerment. I am a strong, proud, free, powerful woman; I depend only on myself, and "myself" includes my husband. I have more self to depend on. With him, I am multiplied; infinitely more empowered than even my greatest potential without him.