My friend Mark brought his Romans down for the test. Setup saw a village (by Lurkio) split his deployment in two. The Roman army is mostly drilled superior troops in armor, small but tough as boots! Being average and unarmored for the most part, the Dacians were nearly twice as numerous as the Romans. This was a classic Roman quality versus Dacian quantity match-up.
Dacians have a couple of good plays in their army. The first is their Sarmatian cavalry, some of the best in this era. The second is their superior falxmen, wielding two-handed swords. In melee, the falx neutralizes the Roman armor bonus and their superior rating means falxmen can stand toe to toe in combat.
My left wing was made up of falxmen and Sarmatians. My right wing was rubbish javelinmen supported by archers. Sarmatians lurked on the right wing too, looking for an opportunity to bolster or get stuck in.
To celebrate my rare victory over Roma, here's Peter Murphy's paean to Dacian falxmen, "Cuts you Up."