Based on her fight with Baars, Cyborg would destroy Holm.
Baars destroyed Cyborg from kickboxing/Muay Thai range but every time they clinched (MMA range) it was obvious Cyborg would rag doll her in MMA.
Having said that, Cyborg still does not stand a chance against Rousey. As soon as they inevitably clinch, Cyborg is going down (and not getting back up).
"I don't care if you love me or hate me as long as you debate me." Ronda Rousey