End game missiles seem to be very uncompetitive compared with the end tech torpedoes, depending on how damage loss from distance works.
Early game missiles are useful because their range increases faster than torpedoes for the amount of research required, allowing you to siege spaceports easily. By the endgame, both plasma thunderbolts and assault missiles deliver about .5 damage per second per space at range 990. For every 100 units closer you get, plasma thunderbolts gain 0.2 damage per second per space, so they are at range 900 they are 0.7, at range 800 they are 0.9, etc. while missiles still deliver the same 0.5 dps/space. Missiles start faster than torpedoes so they are theoretically more accurate (don't know by much), but by the end game, torpedoes are faster.
Anyway missiles, like phasers are only efficient at maximum range. Because of their flat damage curve, they don't get any better as you get closer, your enemy is just getting better at hitting you. If you look at the damage curves for phaser lances and missiles, they look similiar to titan beams and thunderbolt torpedoes at long range, but all the close range hitting power is gone.
< Message edited by invaderzim -- 6/12/2013 7:41:48 PM >