Nunes is explosive, that's what I like most about her. Someone like Alexis Davis might be a better all-around fighter but she doesn't have the athleticism to compete with someone like Rousey. Nunes brings something different in a matchup with her. Too bad it comes at the cost of seeing McMann climb back up to Rousey, because stylistically I still think she's the best challenge to Rousey.
And I don't think Nunes would beat Cyborg. Nunes is really fun to watch though.
P.S. Poor McMann, for real. That right hand she took was absolutely nasty.