Pretty big upset. Don't think Rousey showed Holm's striking anywhere near the level of respect it deserved, she was pressing forward in straight lines as if she was fighting one of her previous opponents who don't have the level of striking experience as Holm. It would have been fine if she'd been trying to close the distance quickly to force a clinch, but moving in straight lines against someone coming from the sort of boxing & kickboxing backround Holm has is a massive no, no.
Holly Holm did fantastically though, she controlled the range & distance completely, there were 2 clinching exchanges & she did get put down by Ronda but luckily managed to wriggle away as she was working for position, the 2nd time Holm put Ronda down.
The deciding factor in the fight wasn't that Holly Holm is the hardest puncher or kicker Ronda has ever faced, I mean she probably is, but the thing that decided it was Holm's movement & control of range, something you'd expect from someone coming from a striking backround.
I'm not really sure what sort of gameplan Ronda came in with, but I thought she'd have done things the Jon Jones/GSP way & did things smart by trying to get Holm out of her comfort zone & when she did close the distance rather than try to take Holm's head off with a haymaker, try to force a trip or a clinch.
Best thing that could have happened for the womens division, I thought Ronda would have just taken her down & eventually submitted her, but through perhaps some arrogance she tried to fight Holy at her game & she has been taught a lesson.