>>13750307this was something i considered after writing the OP, and while ghost technically is the better offensive types in that it has the same amount of neutral coverage as dragons, and the same number of types are both immune and resistant to it, but hits 2 types super effectively, but dragon clearly has it beat in terms of the attacking options (dragon pulse, draco meteor, outrage, dragon claw, dragon dance, and dual chop vs basically just shadow ball and shadow claw)
i guess we have to leave it up to gen VI to arm ghosts with new offensive options if ghost is gonna be good. that said, with just shadow ball, gengar is a monster.