I had 36 of these evil little buggers drop in from hyperspace onto my right flank and cause havoc in my squadrons of Vorchans in a recent game.
Whilst the numbers may be off, I can imagine that even half a dozen or so of these things would mess with a vorchan pack very efficiently. Anti-fighterless gunships are, as noted, utterly, utterly dead meat when you let the shadow's pet attack dogs loose on them.
2 wings - the equivalent of a vorchan - can drop in from hyperspace in a weak arc and utterly avoid retalliation. 3 AD AP DD per flight (total 6)translates to an average of 14-15 damage against a hull 5 target - a vorchan blown to pieces in each pass.
They are a weaker unit because you often have no choice in fielding them, but they are the best 'prey on the weak' unit that the shadows have - essentially allowing you to devastate lighter ships that you don't want to waste slicer beam shots on.
Personally I do think that they could do with an extra flight, but maybe I'm just not good enough at using them.
I will admit that the list of ships without antifighter is more than you might think at first glance - anyone hoping to take these ships against shadows is forced to bring a long a sizable force of fighters to protect agaisnt the horrific damage potential of spitfire flocks.
Abbai
None, really. Tough.
Brakiri
Shakara scout
Centauri
Haven Patrol Boat
Kutai Gunship
Darkner Fast Attack Frigate
Demos Warship
Morgrath Frigate
Vorchan Warship
Altarian Destroyer
Civilian
Civilian Trader
Dilgar
Jashakar Tae Torpedo Ship
Jashakar Vi Scout Ship
Rohric Assault Ship
Mankhat Dreadnought
Mankhat Py Bombardment Dreadnought
Drakh
Every capital ship (and GEG is actually beatable with their bosses guns...)
Drazi
Claweagle Direct Assault Frigate
Eyehawk Scout Cruiser
Sleekbird Assault Cruiser
Sunhawk Battlecruiser
Darkhawk Missile Cruiser
Jumphawk Command Cruiser
Solarhawk Battlecruiser
Strikehawk Battle Carrier
Warbird Cruiser
Firehawk Advanced Cruiser
EA (Early)
Hermes Transport
Tethys Cutter
Tethys Laser Boat
Tethys Missile Boat
Olympus Corvette
Avenger Heavy Carrier
Nova Dreadnought
Earth Alliance (3rd Age)
Hermes Transport
Olympus Corvette
Avenger Heavy Carrier
Nova Dreadnought
Earth Alliance (Crusade)
Hermes Transport
Gaim
...Not a chance
ISA
Blue Star
The
Liandra
White Star
White Star II
White Star Gunship
Minbari
You're joking, right?
Narn
Ka'Toc Battle Destroyer
Sho'Kar Light Scout Cruiser
T'Rakk Frigate
Dag'Kar Missile Frigate
T'Loth Assault Cruiser
T'Rann Heavy Carrier
Var'Nic Long Range Destroyer
pak'ma'ra
Mmmmm....plasma-fried shadows. Excellent with BBQ sauce....
Psi Corps
Shadowcloak Escort
Raiders
Nope.
Other Shadows
Anyone....probably (bizarrely) the best target!
Vorlons
Not. Even. The. Fighters.
Vree
Xouch! Not only do they all have flak, they all have insane quantities of flak....