scourge dont rule the game. It takes 2 to kill an overloard!
It takes many dying to kill a capitol ship. (not counting the lots that get destroyed before ever hitting their target.
About firebats and vultures owned by air.
1) vultures are too fast for air, try to chase down a vulture, run into missle turrents, die.
2)firebats can be bunkered with marines which makes them able to hit air, while still kicking melee butt in a defensive position. The only thing that can beat a bunker in the air is probably a carrirer, bc+yc or a gardian. And if your enemy gots, air, and you are a decsent player, you should have a wraith or something to take out long range air.
Lockdown does not own all. It cant even hurt the weakest race! (zerg) It can freeze goons tho, who as already concluded are pretty bad anyways. They arent small units either so they have to walk around their locked down parters, or even get stuck. Better to use it on a BC or something tho