Jesus apparently took into account the very real limitations of those among whom He walked and chose to only teach them what they could comprehend and, eventually accept.  One must believe that God would have known that people would eventually come to a better understanding of themselves and would realize that women are, in all ways, equal to men.  It is certainly not the fault of Jesus or of God that, even today, there are those who resist the knowledge that God has laid out beofre us and stubbornly refuse to ordain women.