Zuty:Ta'zo has better access to allies, IMHO.
Lots
of big attack allies with Ferocity or large guys with Protector (The
Guardian for instance). Since mages have low health and armor, but Pew
Pew for high DPS you should have lots of protectors or ways to
prevent/avoid the damage while Zerging and PewPewing on the side safely.
Big attack allies with Ferocity...Oh, like Leeroy? Large protectors hunh? What about Crazy Igvand, Kulvo Jadefist or Donna Calister? And even though he's not so big, you can't tell me Korthas Greybeard isn't awesome. Parvink, though not all that special a protector, is still good for any deck.
Truth is there's a lot of good alliance allies out there. I prefer to play Ozzati. If I'm going Horde, I'll use Varanis, unless I'm making a Horde raid burn deck then it's Ta'zo all the way.
Don't take this as Alliance favoritism on my part...UDE is just following in Blizzard's footsteps. Blizzard <3 Alliance.
Zuty:May I also be the first to add that UDE did a HORRIBLE job on making Berserking into a card. They keep it more to the Regeneration aspect of a Troll then the actual racial of Beserking. In the MMO it increases attack/casting speed, so it should reduce the cost of swing and playing class abilities depending on the damage on it, not increasing its AP.
~Zuty
Yeah, Berserking sucks. I guess they wanted as many people to play Troll in the TCG as in the MMO.