playBunny: The stronger player will win more matches than he loses, but probably not more than he draws, unless the skill difference is great.
The length of a backgammon match is always fixed in terms of a number of points, rather than a fixed number of games (except in the case of a 1 point match which could also be considered a 1 game match). Because there are no draws, BG is almost always played in matches to an odd number of points.