Ther is no armor. Only overall health points associated with the hardpoints and the main Health total for a capital ship.
You can easily change the enemy weapon effectivess for all fighters and other capital ships by changing the effectivness in the armor_damage matrix modifier.
This is a very small part from the Config.meg file: Note is does not list the Venator though..
<!-- Turbolaser Damage Type - Space Only -->
<Damage_To_Armor_Mod> Damage_Turbolaser, Armor_Default, 1 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Turbolaser, Shield_Default, 1 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Turbolaser, Armor_Transport, 0.5 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Turbolaser, Armor_Bomber, 0.2 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Turbolaser, Armor_Fighter, 0.3 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Turbolaser, Armor_Hero_Transport, 0.4 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Turbolaser, Armor_Corellian_Corvette, 5 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Turbolaser, Armor_Missile_Cruiser, 5 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Turbolaser, Armor_Tartan, 5 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Turbolaser, Armor_Interdictor, 5 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Turbolaser, Armor_Corellian_Gunboat, 4.75 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Turbolaser, Armor_Nebulon_B, 3 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Turbolaser, Armor_Acclamator, 3 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Turbolaser, Armor_Pirate_Frigate, 3 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Turbolaser, Armor_Satellite, 5 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Turbolaser, Armor_Frigate, 3 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Turbolaser, Armor_Victory_Class, 3 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Turbolaser, Armor_Assault_Frigate, 1.0 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Turbolaser, Armor_Calamari_Cruiser, 1.0 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Turbolaser, Armor_Star_Destroyer, 0.75 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Turbolaser, Armor_Station, 0.75 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Turbolaser, Shield_Capital, 0.75</Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Turbolaser, Shield_Frigate, 2</Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Turbolaser, Shield_Corvette, 1</Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Turbolaser, Shield_Fighter, 1</Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Turbolaser, Shield_Tank, 1</Damage_To_Armor_Mod>
<!-- Calamari Cruiser turbolasers -->
<Damage_To_Armor_Mod> Damage_Calamari_Cruiser, Armor_Default, 1 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Calamari_Cruiser, Shield_Default, 1 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Calamari_Cruiser, Armor_Transport, 0.5 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Calamari_Cruiser, Armor_Bomber, 0.2 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Calamari_Cruiser, Armor_Fighter, 0.2 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Calamari_Cruiser, Armor_Hero_Transport, 0.4 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Calamari_Cruiser, Armor_Corellian_Corvette, 5 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Calamari_Cruiser, Armor_Missile_Cruiser, 5 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Calamari_Cruiser, Armor_Tartan, 5 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Calamari_Cruiser, Armor_Interdictor, 3 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Calamari_Cruiser, Armor_Corellian_Gunboat, 4.75 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Calamari_Cruiser, Armor_Nebulon_B, 3 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Calamari_Cruiser, Armor_Acclamator, 3 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Calamari_Cruiser, Armor_Pirate_Frigate, 3 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Calamari_Cruiser, Armor_Satellite, 3 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Calamari_Cruiser, Armor_Frigate, 3 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Calamari_Cruiser, Armor_Victory_Class, 3 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Calamari_Cruiser, Armor_Assault_Frigate, 1.0 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Calamari_Cruiser, Armor_Calamari_Cruiser, 1.0 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Calamari_Cruiser, Armor_Star_Destroyer, 0.75 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Calamari_Cruiser, Armor_Station, 0.75 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Calamari_Cruiser, Shield_Capital, 0.75</Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Calamari_Cruiser, Shield_Frigate, 2</Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Calamari_Cruiser, Shield_Corvette, 1</Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Calamari_Cruiser, Shield_Fighter, 1</Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Calamari_Cruiser, Shield_Tank, 1</Damage_To_Armor_Mod>
<!-- Star Destroyer turbolasers -->
<Damage_To_Armor_Mod> Damage_Star_Destroyer, Armor_Default, 1 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Star_Destroyer, Shield_Default, 1 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Star_Destroyer, Armor_Transport, 0.5 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Star_Destroyer, Armor_Bomber, 0.2 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Star_Destroyer, Armor_Fighter, 0.2 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Star_Destroyer, Armor_Hero_Transport, 0.4 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Star_Destroyer, Armor_Corellian_Corvette, 5 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Star_Destroyer, Armor_Missile_Cruiser, 5 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Star_Destroyer, Armor_Tartan, 5 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Star_Destroyer, Armor_Interdictor, 3 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Star_Destroyer, Armor_Corellian_Gunboat, 3 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Star_Destroyer, Armor_Nebulon_B, 3 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Star_Destroyer, Armor_Acclamator, 3 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Star_Destroyer, Armor_Pirate_Frigate, 3 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Star_Destroyer, Armor_Satellite, 5 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Star_Destroyer, Armor_Frigate, 3 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Star_Destroyer, Armor_Victory_Class, 3 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Star_Destroyer, Armor_Assault_Frigate, 1.0 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Star_Destroyer, Armor_Calamari_Cruiser, 1.0 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Star_Destroyer, Armor_Star_Destroyer, 1.0 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Star_Destroyer, Armor_Station, 0.75 </Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Star_Destroyer, Shield_Capital, 1</Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Star_Destroyer, Shield_Frigate, 2</Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Star_Destroyer, Shield_Corvette, 1</Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Star_Destroyer, Shield_Fighter, 1</Damage_To_Armor_Mod>
<Damage_To_Armor_Mod> Damage_Star_Destroyer, Shield_Tank, 1</Damage_To_Armor_Mod>