Stated differently, the unbalanced schedule favors the Red Sox and Yankees, who get about 18 games this year against the Rays, Blue Jays and Orioles, who today are a combined 47 games below .500.
The unbalanced schedule disfavors the Astros and Mariners, who get about 18 games this year against the Athletics, Angels and Rangers, who today are a combined even .500.
That stark disparity impacts the difference in the win totals of the Red Sox and Yankees, who are a combined 62 games above .500, and the win totals of the Astros and Mariners, who are a combined 53 games above .500.
All I wrote on this thread on Friday was: "The win disparity can be explained in part by the Red Sox and Yankees playing in a less competitive division than the Mariners and Astros."