what do you people think is the easyest bracket. i personally believe the 5v5 bracket has the easyest games, but is the hardest to get going. you can throw any 5 decent people together and get somewhere.
hardest: i personally believe that the 2v2 is the hardest pracket. i play an ele sham, and imo. ele shams are not made for 2v2.
3v3 is, and probably always will stay fairly balanced. blizz balances arena around 3v3.