Fallon "The Queen of Swords" Fox MMA Stats, Pictures, News, Videos, Biography - Sherdog.com
So Fallon Fox isn't undefeated, and interestingly she looks more 'womanly' than several other fighters. For example
Cristiane "Cyborg" Justino MMA Stats, Pictures, News, Videos, Biography - Sherdog.com.
Cyborg has also tested positive for anabolic steroids in the past and received a year ban.
From what I've read, Fallon has received a lot of criticism because she appears to be smashing her opponents with strength rather than skill. Though this same criticism has been levelled at Cyborg (though perhaps not as loudly).
A lot of the criticism around the how thorough the UFC regulations are regarding transgender women point to the lack of data and scientific understanding on the effects of bone structure (not just density) and in particular muscle retention (endurance and the effects of aerobic exercise).
As a side note, the effects of bone structure that people are concerned about are:
- the size of the shoulders; this can provide a mechanical advantage in combat due to the higher levels of torque the body can produce to swing a punch etc.
- the orientation of the legs to the hip bones and the thickness of the leg bones. The shape of women's hip bones are different to a males because of the pressure placed on the body when undergoing child birth. The difference in shape if I recall correctly makes it easier for a woman's leg to angle sidewards (sidesplits), at a cost of being unable to deliver as much forward thrust power through the legs as males.