grenv: There is, of course, such a thing as a draw if the rules permit it as they do here. However, there is no board position that forces a draw (what might be called a "natural" draw) so the ability to agree on a draw is something of an anomaly.

Another anomaly here is the notion of a 2-game match (used in the standard stairs). BG is never played in 2-game matches for the very reason that the predicted outcome in such a case is 1 win apiece, resulting in a drawn match. I don't play standard stairs anymore for that reason: I was losing rating points in the great majority of matches without gaining anything on the stairs.