They both were hyped up way too much in thier primes.
I'd be shocked if this fight ended up looking good/crisp visually.
Gina was obviously better at stand up, but it's going to be the age old question if she can pick apart Rousey, and manage not to get taken down. If Rousey gets her to the ground, it's almost certainly going to be an arm bar.
The game plan is there: the longer you keep the fight standing, the more you expose Rousey's lack of stand up.