Counter-heroes in duel mode (3.1).

Yesterday, I played against an opponent who always uses Ossir. I, in turn, used Iris. We played about 6-7 times. I only lost once, and that was by chance. My opponent has a higher rating than me. Therefore, I can conclude that Ossir is weaker than Iris. There's no point in posting replays; they're all the same: everyone around is using armored units, griffins attack from the sky, Iris places crystals of secrecy, monks attack archers, and archers die from the opponent's volleys.