I just tried a Baktrian campaign in our latest internal build and I must say I was surprised. It's 260 and I'm barely holding on to Baktra itself, having been sieged three times by the Saka (twice) and Eleutheroi (once). Rebels are just about to take Alexandria Ariana from me, and I've lost and retaken Kophen also. Parthians are heading towards Baktra now too. Gah. The Seleukids have been driven back further too, so they are no help. PLaying VH campaign, M battles. But they are easier for sure in 1.0.