A very interesting saying, that makes me think of it every time I hear/read one.
AFAIK, there were no competitions in Aikido. So there were no concepts of winning/losing. Excpet the competition with yourself.
So, what does it really mean "to compete with yourself" ?
IMHO, It is a duel between you and your self.
If you win - it shall be MASAKATSU.
the question is : "How do I know if I win?"