This is funny. For "survival" grappling or whatever the heck marketing term the Gracie brothers are applying to their "essentially the same as most people's grappling", Rousey actually did a terrible job of that.
Do you guys remember Miesha kicking her square in the head from the guard several times? That dazed Rousey and was easily solved by good posture, which should be a survival grappling tenet drilled early on.
Do you remember Ronda slowly, slowly working a terrible triangle that didn't happen because she was so focused on the armbar? Where's the quick switch that could have finished Tate in that round?
Where's the technical stand-up? She needlessly back rolled out of one instance of being on her back. Tate actually did a technical stand-up later on.
Basically, the Gracie brothers didn't help much with her overall game and she's still using what she's learned with the Armenians/LeBell/judo people without much tweaks. See the multiple Iaskevitch rolls, mediocre guard passing and insistence on armbars as the proof.