Counter-heroes in duel mode (3.1).

So, I'm back, and I played a bit. I managed to create a decent replay. Deidra vs. Erin, the advantage here is with Deidra. In my opinion, Deidra's mistakes were using Vampires against Vampires and being indecisive in the endgame, focusing on Witches instead of mass-acceleration or something more useful.
Tactics for Deidra against Erin: I rarely and haven't played this matchup in a long time, but I can assume that in the early game, either a pair or a single Berserker should target the Furies with proper positioning for Erin; if positioned incorrectly, the Berserker should target the Witches. Then, Banshees, Plague Carriers, Vampires on the Dragons or any surviving unit, and acceleration on everyone.