Yeah, I'm also curious how it compares. Hard to tell if it's really better than HT. What I'd like to see is fetishes, dogs, and gargs being on par. Right now the Gargantuams just dominate everything for pushing, and dogs and fetishes are just for survivability. But it's certainly a good starter set for sure if it stays this way; you'll probably be able to go straight to T8 or even T10 as soon as you complete chapter 4.
@FEIF81: Look at the video, he gets absolutely terrible rifts and also said that he's playing more casually. He didn't really make density and re-cast the gargs on top of elites and so on, it's a casual GR80 and not "pushing". Before you say it's useless I'd give it a chance to compare on PTR. What I like about Zuni is that you can combine it with other items because it has non-standard armor slots. Although (as people already pointed out on several forums) it sucks that there's no good choice for shoulders.
@OP: Remove Stricken, it's a waste in this build at this level. Stricken really only makes sense once the RG fight takes 2-3 minutes or longer. When the initial hits of your pets already take so much life off of the RG, you can see that Stricken is useless and you'd be better off using something like Esoteric or Molten for toughness, or Powerful for an overal damage boost, or even Pain Enhancer and playing offensively by trying to get high attack speed spikes. In general it bugs me that every guide recommend Stricken because the top dogs use it - but 99% of Diablo players should never ever even level Stricken.