So I decided to test out massive fleets against Templar fleets in Campaign, and I've reached the conclusion that the AI simply cannot handle fighting most Templar vessels.
Heres the results against a largeish sized Templar Fleet - 2 Paladins and a handful of Jesuits, along with a single Teuton wing.
Diable Avionics: x2 Storm, x1 Haze, x1 Gust, x4 Hayle, and about 10 assorted Wanzer wings.
- Utterly destroyed. Only took out one Jesuit.
Scy: x3 Nemean Lion, x4 Sthenos (A), x4 Lamia (A), x8 Talos, x3 Manticore Swarm
- Didnt even break a sweat. Lost 3 Talos frigates. From what I can observe, it seems beam weapons are notoriously effective against Templar vessels.
Imperium: x1 Caesar, x2 Dominus, x4 Eagle, x2 Centurion, x10 Invictus
- Lost everything except one Domnius. Templar started retreating once I destroyed both Paladins.
Vanilla Midline Fleet: x2 Conquest, x6 Eagle, x2 Heron, x4 Hammerhead, x6 Thunder
- Got demolished similar to Diable. Vanilla weapons don't cut it against the Templar.
Neutrino: x1 Jackhammer, x3 Lathe, x3 Hacksaw, x2 Sledgehammer, x8 Relativity
- Even-ish battle. Ships kept getting lost to Clarents that went around the tiny shields of Neutrino.
I rather enjoy the challenge, actually. I think they're in a very nice spot right now (though maybe just a few more Templar ships would be nice).
Edit: Forgot to add, this is with a 5/10/7 skilled character.