Many references are made to two terms: Margin of Success(MoS) and Margin of Failure(MoF). These are simply numbers equal to the amount the user succeeded or failed the roll by. This is used to calculate the degree of success or failure.
Example: In the above example, Victor rolled very well on his Swordsmanship total, getting a 33 result. His opponent's TN was 20, meaning Victor beat the Difficulty by 13. His MoS is 13.