User blog comment:Waters Knight/Monty Tweets About 'Dust Levels'?/@comment-3146930-20140514094708

It could just be a way for Monty to keep track of how powerful a character is in a certain field. For example, Glynda can make entire ice storms and control debris almost effortlessly, while Weiss can only perform somewhat-advanced Dust attacks (like shooting fire or making ice), and Nora can only fire Dust from her gun.