The game last year was at Montini.
The game this year is at Montini.
Byron had a per-game average scoring margin last year of +54 points.
Byron has a per-game average scoring margin this year of +42 points.
Montini had a per-game average scoring margin last year of +4 points.
Montini has a per-game average scoring margin this year of +18 points.
Byron won last year by 6 points.
Byron's average scoring margin has decreased by 12 points per game (last year to this year).
Montini's average scoring margin has increased by 14 points per game (last year to this year).
You may draw your own conclusions.