The only thought of skill in the deck is whether or not to sacrifice a minion to kill another (which is almost never).
The zoolock has a couple counters, but players should not be forced to play a certain class/style just to stand a chance.
It's all fine when a class is at a 6/4 advantage over another, but this deck has a 8/2, 9/1, 10/0 matchups.
Zoolock seems to be...
Good starting hand for the warlock = a HIGH chance to win
Bad hand for the warlock = 6/4chance to win
With the card types a lock has, a bad hand isn't likely because of how well the low cards can work with eachother.
While other classes are more like...
Incredible hand = "I may be able to win this"
Bad hand = "Concede now, 1/9 advantage, waste of time.
The game (like fighting games) should have bad and good matchups, but never should have matchups where you sit there unable to do anything throughout the game.