Air Balance Model

The supporting air units (Corsair, Valkyrie, Devourer) do very well versus the Tactical air units of the other species (Scout, Wraith, Mutalisk). The new units in Brood War are intended to be support units, meaning that you cannot win the game with them. Capital ships (Battlecruiser, Carrier) are equipped to deal with these supporting air units in deadly fashion. The key to retaining air superiority is to be the player with the most balanced air force.

On a side note, the Devourer is not meant to be a strong attack unit on its own, but rather as a powerful support unit for the Mutalisk. The designed usage of the Devourer is to use them for your initial attack and then, after the Devourer has splashed Acid Spores onto an opponent’s force, bring in the Mutalisks to make short work of them.