I think that the We'z bigga and innovation argument is done here. I just would like to round off the pillage / lobber crew one. You need to see it in context.
Lets imagine you're going first, your hand is accelleration and men, you as many men onto the table as you can.
Your oppo plays two supports, lets say Har Ganath in the kingdom and warpstone in the quest. He will have 4 resources and 2 loyalty symbols next turn and will start to play his more powerful, higher costed cards.
On your turn you pillage his Har Ganath and hit him with your dudes.
His turn 1 might as well not have happened, he is back to 3 resources and 1 loyalty and has to take another turn to set up again!
Even assuming he does manage to set up again, you get to attack again with the units he hasn't been able to deal with.
The point is that you don't just sit there going "ha ha" I burned your village - you play guys and hit them with them while limiting his power to defend himself.