In my campaigns Makedonia used to always get squashed, but now adays they lose Pella in the first turn, and their southern Greek holdings soon later, though they keep Myteline and Demetrios for ever. The garrison in Demetrios becomes one of the most experienced armies in the world, and no matter how small, constantly defeats the stacks sent against it from both Eperos and KH. They also usually take Pergamon and Byzantion as well, and send a few armies to try and retake Pella but never do. I'd say the faction that usually gets unfairly annihalated every time is the Adeuii, who cant stand against the pressure from Rome, Arverni, the Sweboz and sometimes Lusotania.