Man Named 'Tiffany' Is Dominating Women's Pro Volleyball in Brazil

[A Theist]

Because you asked me,  

"Are we lowering his (or rather, her) testosterone levels to an acceptable level in this scenario? That makes a difference."

No. In this scenario Duran is not lowering "her" testosterone levels. "She's" decided to wait until after "her" Boxing career is over. Roberto, ( now Roberta ), Duran just simply identifies as a woman and is challenging Ronda Rousey for her title. Would that be a fair competition, to pit a much stronger "Roberta" Duran, who held five different championship titles as a man in five different weight classes, against a far outclassed Ronda Rousey? You're saying it makes a difference? Why? "She" was born male but identifies as a female. Wouldn't it be bigoted to keep "Roberta" from competing against other female fighters?

But that doesn't correspond with what's happening in reality Or did you just want to say that a man could kick a woman's ass any time of the day? If so, you don't need me or this hypothetical to just say it. Go ahead, just say it.

If a person who was born male but identifies as a female and hasn't lowered their testosterone levels, that person is still a man, in your opinion?