I'd go more with strength, personally. She has the sort of core strength that other female fighters just don't have. When I watch Ronda fight, what sticks out to me isn't that she's buzzing all around other fighters and they can't touch her, but rather how effortlessly she tosses them around and overpowers them. Although of course a lot of that is technique, but I still think she's very physically strong for a woman. She's powerfully built, with big bones. Her power is starting to come along now as she learns new techniques in striking. She got the first clean KO in women's bantamweight division history and before that she stopped a very strong Olympic wrestler with a strong core with a single body shot.
She has a very explosive shot which you tend not to see with women. Her take downs look a lot like how explosive male wrestlers take guys down. So I think she's more explosive than most women. Of course the technique she built up as a wrestler aids with that, but I don't think female wrestlers like Tate are as explosive with their take downs. The only other exception is McMann who of course was an Olympian and has unreal muscle mass for a female.