Well shoot, the game rules are basically an excel spreadsheet. It looks like I've purged it from my dropbox, but it's probably still kicking on a flash drive somewhere. I may be able to dig them up.
Failing that, it was just formulas I'd made up based on pretty specific constraints for economy (in GW1, system control and fleets, in 2, system count, planet count/quality, fleet upkeep costs) and combat (forget the breakdown but basically level for fleet techs like weapons, sheilds/armor, ship quality, etc). Then there were flags for whether or not the players had certain special tech that let them break regular rules or do other things.