As we have both known Terran race an ultimate superweapon which is nuclear launch.In Starcraft 2 the effects of the Nuclear attack is very realistic especially the wave effect is fantastic but i think the damage influence must be permenant parallel to the nuclear sprinkle phenomenon.Other superweapon is Protoss Mothership which will have devastating effects on the battlefield because of its advanced special powers.Here the question is the Zerg race will have a superweapon too or it will be compansated by increasing the strength and durability of the Zerg units? We shall see..