Ok, on a different tack, I'm having trouble adjusting the explosion from the Corsev demolition team. It does a lot less than the rated value even against pirates, who don't have shield mitigation.
For example: a serious upmodded bang of 1800 raw damage does 957 actual damage to an armor of 4 and 833 damage to armor of 6, both of which correspond to a damage before armor of 1148 (or 1147.9). So what causes the drop from 1800 to 1148 (before armor) on a pirate? There is a DamagePercentBonus:CAPITALABILITY:Pirate 0.75 in Gameplay.constants, but that's not what's getting applied, because it should be bit more in that case (1350 not 1148). And it doesn't seem to be modulated by the DamagePercentBonus:ANTIHEAVY:Pirate 0.60 (I'm blowing up a board Cobalt amid pirates) because that's a bit less (1080 not 1148). The bang percentage is actually 63.77% of rated dmg vs. pirates (before armor), but I have no idea where this is coming from. Any ideas?
Update: DamagePercentBonus:CAPITALABILITY:Pirate definitely affects the outcome. Increasing it to 1.0 result in a big shazzam on all the pirates in my previous test, so I had to lower the demo team damage to 1000 to see what happens. And it's still intriguing. From a damage of 1000 with DamagePercentBonus:CAPITALABILITY:Pirate set to 1.0, on an armor of 4 the bang did 709 damage, and on an armor of 6 it did 654 damage, both corresponding to a damage before armor of 850.8 (or 850.2). So it seems that besides the multiplier from DamagePercentBonus:CAPITALABILITY:Pirate, there's another 15% damage reduction from something affecting the pirates. So it seems all pirates get a 15% damage mitigation from their non-existent shields (??) except this mitigation doesn't go up under fire?
Anyway, the math checks out for the previous test as well (the one with with DamagePercentBonus:CAPITALABILITY:Pirate 0.75), because 0.75 * 0.85 = 0.6375, which is almost precisely the 63.77% reduction observed there. So the 15% minimum damage mitigation provided by shields appears to apply to all ships in this game, regardless whether they actually have any shields and possibly to structures as well (that remains to be tested)...