If this ratio is higher then 0.5 then Player A was in control of the match, meaning that his or her winning or losing the match was primarily due to his or her doing, rather than due to the opponent's offensive play or errors.
If this ratio is higher then 0.5 then Player A was in control of the match, meaning that his or her winning or losing the match was primarily due to his or her doing to the opponent's offensive play or errors. This was rather than due.