This game follows a traditional RTS format, it doesn't matter what the upgrades do it matters what damage type you're flagged as and what armor you're going against.
Specifically armor types. I know there is an armor medium value in the game and probably light , capital , and heavy or I would guess at the very least. The damage values are the same and correspond to a table stating what the *real* damage is.
That being said, the game seems to have soft counters not necessarily hard counters which makes it even more interesting.
So Knighty4, the only way to find out is to dissect the files that have the damage information, then compare and contrast and you'll know what reductions you're up against and what bonuses you are granted when fighting against a certain thing.