well, they are stronger so that they are not only cannonfodder. - we, as a part of a community ( no, not the disco community - but our chars as part of sirius ) are not really supposed to be different to the NPCs. a corsair named "maria gonzales" in a titan that is a NPC is to be treated the same way that a char named "francisco martinez" in a titan that is a player.
of course, thats not possible - but its a little bit of illusion the mod tries to create. - NPCs are not supposed to be "annoying" - they are supposed to be dangerous.
off of all the NPCs, the ones i like the most are stationary battleships. - when i am friendly to them and my enemy is not, i can flee to them and they WILL protect me. - i wish it was the same with NPC fighters.
right now, your own NPC fighters are almost more annoying to have than not to have. - when i don t have them, i can nuke mine you for example - when these guys are around i cannot do it - and when its about efficiency - me nuke mining you is more efficient than having 4 of my NPC buddies that miss you all the time.
the matter with 4-5 BHG destroyers ( battleships don t appear in missions from the BHG ) - or 4-5 corsair osiris is something different - thats just the poor randomized mission engine of freelancer.