I've seen it. If Ronda gets top position, I have no doubt she'll snap Cyborgs arm. The best defense for a armbar is not to get put in one and if Cyborg get put in one by Ronda that's a wrap IMO.
Watch the video I just posted, Tito Ortiz has her in a triangle and she picks him up and slams him.
She's very, very strong and she's a black belt in BJJ. I think this one goes to decision. FOTY candidate for sure.