An easier way to do this may be to go into the gameplay.constants file and say for instance, double all of the damage modifiers for each weapon type.
So for example if
ANTIVERYLIGHT weapons do 1.0 (basically the stated damage on the unit infocard) against a VERYLIGHT ship armor, then change that modifier to 2.0
Said another way, edit the damage tables defined in the gameplay.constants file
I don't remember exactly how the code is written, but you should only have to change one file if you want to buff the damages of all ship/structers in the game so its uniform. It would also save you from having to go into each entity file and editing separately.