One thing I love more than anything about this fight-Ronda highlighted in her countdown segment which is that Cat is super mentally strong, mentally tough. She does not and will not break mentally in the fight. The only way to beat her, is to kill her. Ronda will have to snap a limb or choke her to sleep.
On the flip side, When Ronda is a fight, there's no bitch in her, she's 100% fighter and would go out on her shield.
I think Ronda's mental toughness and heart is matched by Cat, but the difference will be Ronda is far more skilled than Cat.
My .02