Gamerhome vs Heroesworld

They don't play that well; one wrong decision of mine cost us the game. I failed to get Grand Order on 131 (or even 132 with support from secondary skills to make it easier), and that was it; there was no point in switching to a smaller hero... I lost myself, and Moner had no chance, dying on the 3rd week in the center.

That's usually how it is; often, much smaller things, like a single cast in Fortress or a mistake in assessing the turn order (remember the Scorpion with the Naga in Michurinsk), can ruin the entire game.
In my opinion, it was a mistake to record a video in such a game; it was bound to be distracting and affect the outcome.