That is good to know. So basics are...
So... in 12 seconds, assuming M:10, B:8 and K:4 damage (top of the line Age of War tech each), knowing that a miss isn't a portion of damage but 0%.... on average
Missiles: 3 shots * 10 damage * .9 = 27 damage
Beam: 4 shots * 8 damage * 1 = 32 damage
Kinetic: 12 shots * 4 damage * .8 = 38.4
So I guess in the end, with one gun, Kinetic really is the highest damage total, with beam next and missile lowest. If I add in the mass %, I can get...
Missile: 1 (16.2 Mass)
Beam: 1.125 (14.4 Mass)
Kinetic: 1.93 (8.4 Mass)
That means in 12 seconds, equal mass I am doing
Missile: 27 Damage
Beam: 36 Damage
Kinetic: 74.112 Damage
OK, so after running these numbers (doing it here so someone else might be able to look it over), Kinetic is incredibly powerful overall. It does a lot more damage per second, per mass than either of the other two. Beam is better than missile, faster, more accurate makes it do more damage reliably, while missiles really do fall in last place by quite a bit. Kinetic does 2.75x more damage on average over Missile.
Thanks for the info, helps a lot. Might I know where you found it out?