In my campaigns it has ever been the AS who rule, or at least stalemate the κίτρινοι, if I may use that term..

In my Arverni campaign, none of the factions followed expectations. The Sweboz left me in peace and tried to expand westwards, the Lusotana went to war with Qarthadastim, the Qarthadastim went to war with the Ptolies and are already have Ammonion and Paraitonion and are knocking on Memphis, the Baktrians went to war with the Saka, the Getai own(ed) the Balkans, Skythia and a bit of the Baltic, Makedonia took over the administration of southern Asia Minor and are embroiled with the AS over Antiocheia, the KH own all of Greece and are contesting the ownership of northern Asia Minor with Pontos, the current owners, the Hayasdan carved the Sauromatae into half, the Sauromatae expanded towards the Baltic before losing the provinces to rebellion, AS took India and expanded into the steppes, Pahlava and Saka are in this disjointed checkerboard fight over the eastern steppes, and the Saka own Ethiopia and are launching invasions against both Pselkis and Babylonia alike.

...Scary.