That parallel is only a weak inference.
Yes, it is a somewhat weak inference. However there is a lot of other evidence which indicates chess is a draw when neither side makes an error. When one has a ton of evidence--he can rightly give his opinion that chess is a draw.
Numbers don’t matter. It’s still not a fact. It’s a guess. But people confuse guesses with facts. They are not humble enough to admit they don’t really know.