Strawweight Carla Esparza will bring an impressive credential to “The Ultimate Fighter 20″ as the now-former champion of Invicta FC. Yet the 115-pound Esparza (9-0 MMA, 0-0 UFC) doesn’t expect to be treated any differently when she joins the first all-women cast of the long-running reality show, which begins filming later this year. “It never even crossed my mind,” Esparza told MMAjunkie Radio. “It doesn’t bother me to have to prove myself. I’ll go in there.