I said YES! But it was not very spectactular, the Armenians retreated without fighting.

But the next turn I moved in their harbor, then I was attacked by an armenian full stack of 4 Skythian archers, 1 x horse archers and the rest pantodapoi crap. I had 4 depleted units of Doryphoroi Pontikoi, 1 unit mercenary Phalangitai, plus 4 units steppe riders and 2 units Sarmatian horse archers. I slaughtered them all and got a heroic victory.

Currently I'm besieging their capital. I'm not very interested in Tanais, so I think I'll give it to the Sarmatae. When the Hay are wiped out, I hope the Baktrians will finally ally with me against the Seleukid rest-empire.