In 2011, Nunes lost to Sarah D'Alelio via decision
In 2011, Ronda beat Sarah D'Alelio in 25 seconds
In 2011, Nunes lost to Alexis Davis via TKO
In 2014, Ronda beat Alexis Davis in 14 seconds
Holm was obviously a great boxer in 2011, but that's when she first started fighting in MMA. it's safe to say her takedown Defense wasn't what it was when her and Ronda actually fought. I'd give Ronda the edge in 2011. Holly's striking was light years ahead of Rondas. But they didn't have 12 fights to study and prepare for Ronda at that point. I think Ronda would have gotten her down and subbed her. From 2011 to 2015 - Holly got much better at stopping the takedown, grappling, and just evolved more as a MMA fighter. Where as Ronda fell in love with her striking, and never really evolved as a fighter.
I think Valentina beats Ronda that early in Rondas career.