This will always be a limitation to (most) e-sports imo, especially one heavily centered around RNG like Hearthstone. Most videogames aren't designed around the concept of "e-sports." They're designed so that if you're doing better than the opponent (or CPU), then you should win 99% of the time. That's why tournaments have to come up with these BS stipulations to force exciting "uncertainty" in the results. It's harder in most video games to allow natural comebacks, whereas with physical sports, one person or team can just "impose their will" on the game. I enjoy watching e-sports, was big into Starcraft, but at the end of the day these limitations imo will ensure it will never be able to replace actual sports.