Being one who's unable to attend either coast's event, and seeing the various videos from both events, for me both Orlando and Hollywood did a nice job with AHS. Now as for which one I personally find better (Based off videos I have seen.)...it's a little tricky since while both are similar, they have their own unique pros and cons. I have to break it down by season.
Murder House - I have to agree with Fallow that it's on the neck and neck side comparing the two. Hollywood seemed to have more variety in the scenes, while Orlando seemed to stick to the basement for the most part. While on the flipside, Orlando used a lot more characters from the show then Hollywood. Though when it comes to the Rubberman, Hollywood just used him as a general pop out scare, while Orlando has a fairly creepy scene with him. Personally for me, Orlando get's a slight edge for that.
Freak Show - This is a conundrum for me, Hollywood's version does flow better in this season. Plus, Monkey! *Happy Dennis Hopper* Orlando's flow is fast forwarding every step you take through it, so it does get jumbled. However I do like the stuff they incorperated such as you going through Twisty's van, that and I like the little touches such as the reveal of Dandy. Objectively Hollywood's is better, but subjectively I'm not too bothered by Orlando's going ludicrous speed through theirs.
Hotel - This is the only easy one to compare, Orlando definitely did the better job with Hotel. The bigger length and bigger variety of characters really works in it's favor. (An' Hollywood's creative decision to base their AHS around all the Halloween episodes might have hurt them a little here.)
So slight edge to Orlando for Murder House, a objective edge to Hollywood for Freak Show and a clear advantage to Orlando for Hotel. Though overall as I said earlier both are good. I'll happily take this over TWD, that's for sure.