"Men are superior and women are inferior"
Actually it's quite the opposite: "the feminine is the beginning of everything and man is the end of himself".
I explain, man is greedy and ambitious by nature, he is naturally farer from spirituality while woman is inherently bond to the spiritual world. It is easier for a woman to master and balance her impulses and it's no problem for a woman to live without sex. Buddha nature and becoming a Buddha is becoming feminine, getting rid of all masculine attributes, therefore it is more of a challenge for a spirit to achieve it in a male body, the woman is already feminine so she already has incorporated in her nature some of the characteristics of Buddha nature such as compassion, loving kindness, the will to help other sentient beings and all those qualities that are so characteristic of the feminine. It is exatcly because man is spiritually inferior that the spirit chooses a masculine body, so to make her path harder (it has nothing to do with social or cultural issues which are related to politics and power - if these issues mattered they would be dragging the spirit back to mundane thoughts and activity).
There is no need for women to feel bad about the possibility that spirits choose a masculine reincarnation, like there is no need for man to feel bad about their aggressive nature and spiritual inferior condition that needs to be mastered. Because very soon all men will be women and all women will be men.
However, there is a need to explain this issue about Buddha nature, since for so many milleniuns it hasn't been given the right explanation and it has served many political interested.