It's not made for athletics in general, but they can grapple OK, as long as they aren't facing other men.
I don't mind watching Women's Freestyle, or Women's Grappling(No-Gi) or even straight BJJ.
I used to hate women's MMA with a passion but it's getting a little better. Most of the top fighters are grapplers for obvious reasons because the strikers will never cut it but Tate and Rousey was fun to watch. Ronda is great for the sport.
In a reality show, the drama would be intense and I'd love to see how they reacted to being in the house, take a bunch of wrestlers, grapplers and judo girls and put em in there. Also unlike the male TUF there is bound to be some lesbians since like 60 percent of athletic women are and there might even be some sexcapades lmao...