The Lilith is a problem to any destroyer anyway...
The Hecate seems to be a clear responce to Shivan tactics in the Great War, when they got pwned by swarms of shivan fighters and bombers. Capacity and fast ship deployment is the key of the Hecate to counter this.
Carriers are supposed to have inferior hull plating and firepower, they need room for the ships and its logictics (armaments, parts, a long etc).
Considering that the Hecate is a good carrier, its firepower and armor are excellent.
I'm a X-Universe player too, so i bit used to the carrier concept, in that game the carriers has MINIMAL firepower, just to defend itself against smaller to medium craft.