I'm just curious, I don't know much about Holm at all, but I know she is or was a professional boxer. Could she not beat Roussey on the feet? I've seen Joanna's boxing in the ring and I think she'd destroy Roussey if they were the same weight in a strict boxing match.
In a boxing match she would beat Ronda. She'd use her jab to keep Ronda on the outside, and pick and move her to an easy decision.
But this isn't a boxing match. Even on the feet Ronda can shove her up against the cage and dirty box. Hit her with elbows and knees. And she clearly has knockout power. Inside a UFC ring, even if Ronda and Holly agreed to not go to the ground, Ronda still destroys her in the first round.
Really the only way Holly Holms can win is if she stays off the cage and the mat, never lets Ronda get within clinching distance, and circles her for 5 rounds moving in and out with quick combinations. I mean, I suppose it's possible. But that would require Ronda doing quite literally nothing but standing in the center of the ring for 5 rounds and letting Holly dance around and pick away at her.
But that won't happen. Holly doesn't hit hard enough to make Ronda fear moving in for the clinch. There's just no way she wins this fight.