Something to bear in mind with the 80 year war is that GMG won mostly because they couldn't lose. Aomori was invincible. Rheinland took everything else and sat around for 80 years unable to finish the job.
For vanilla, I guess lib>bret>ku>rhein>>>gmg>corsair>outcast>hessians? with nothing else of significance. that's postgame, after nomads messed up the latter two houses, i guess.