Well, in RTW then all the barbarian factions are so poor that they never stand a chance against the major factions, so sometimes people host a battle which says for an example ''2v2 CWB only barbarians''. For that makes it an even match for everyone since all the factions are as equally bad, but othewise they are never used.

But I think it would be best to divide the tournament not even further by having also some pure-hellenic and pure-nomad tournaments, for the Roman and Carthage faction can compete on behalf of all the barbarians against other factions and most of these Hellenic and Nomad factions are good all-round in their unit selection.

But the players can decide such things next summer...