He didn't really admit it. He indirectly admitted it by saying "that they all kill super fast." However, he tested it by just making them all kill 4 total monsters on the most predictable map of monster stats, leaving out any element of the need to teleport to find a place (running out of mana), or uncertainty of monster skills (TZ heralds) for defensive capability, or even killing monsters with high HP (Player 8 T5 heralds).
So, he was wrong and said so. Thats fine with me. Most people arent able to do that at all. Everyone knew it anyways. You cant kill monster twice with one shot.