Playing FS2 on Insane, with Alpha 1 being just a normal ship that dies in a couple missile hits, the forces used in most of the campaign missions (particularly against the NTF) don't make much sense from a military point of view. You don't notice except on the higher difficulty settings, but you are badly outnumbered in almost every mission. For example, in Feint, Parry, Riposte, the GTVA sends a single wing of interceptors to provide fighter cover from a cruiser facing a dozen enemy fighters, then expects the same wing to tackle the 3-4 wings launched from a destroyer with only a 3-ship reinforcement. Even if Alpha wing manages to lure the escorts away from their cruisers, they're still out numbered 3 to 1.
While this makes some sense when fighting the Shivans, who presumably have huge numbers of fighters and no qualms about launching them in expendable waves (an effect that makes the Shivans much more intimidating on higher difficulties, since their numbers start to matter a lot more and you realize that there are a TON of them), the game gives the impression that the GTVA generally had less fighters and bombers than the NTF. I get that players need something to shoot on the lower difficulties, but in terms of realism this really bugs me (I'd consider Insane the most "realistic" difficulty setting since you don't get a magical ship with tougher armor). Is it simply a case of GTVA fighters being more advanced than their NTF counterparts or what?