well the terran have the nuke and the protoss have the mother ship and the zerg look pretty defenseless except the exploding zergling things blizzard better have a master plan to balance it all out or zerg will die out

Not to mention the Terran Thor. But I'm not sure how it fairs against so many small units though. Is it's attack splash?

I dont know its rockets or w/e are as good as they look but its just a guess