Originally Posted by
FobManX
I'd put Warlock at 1. You have a lot of AOE, removals, and excellent minions. And of course, the best hero power in the game. You can not win in the late game value war vs a Lock when they're drawing two cards a turn.
Rogue is good because it has the most efficient damage dealing hero power of any class(well technically equal to Hunter, but Hunter's can only go face).
Hunter can be good if you build your deck super aggressively with low curve. You can really put your opponents on a clock with that hero power.
Warrior is very hit or miss. It can actually be amazing if you get enough weapons, but without them you get wrecked. It also has the worst hero power in the game(at least for Arena)because it doesn't deal damage, affect the board state at all, or draw cards.
The rest of the list I more or less agree with, although I tend to do better then most with Druid for whatever reason.