There's a difference between training to be as strong as you can be and training to be stronger than everyone else..
Another way of saying it is the difference between between rational and being delusional. That said, I feel that the stronger you are in every way, the more options you will have whether that be physically, emotionally, mentally, or whatever. The natural transition that should occur--in my opinion--is the source of that strength.
Over time, a greater reliance of use of Aiki, properly timed and placed utemi, as well as internalized confidence will help compensate for the effect of father time which can sap many forms of strength.