If Rousey fought the same way each time I would see her losing 9 out of 10 times. In the rematch if instead of chasing Holms, cut off the rink, worked more on taking her down, then I think the advantage would shift to Rousey.
Rousey tried to take her down but by then the fight was lost. Rousey made the mistake too many great athlete make. Assumed she was too good to have to worry about what the other person could do.
No matter how long and hard Rousey trains, she will never be a better striker. Just like no matter how long And hard Holly trains, she will never be a better grappler.