Defense Wins Championships

Why are the varsity boys winning?   The table below shows each opponent's score against MV, their average score in all other games and the difference. 

Every team except Central Catholic is scoring below its average - some schools are waaaaay below their average.

Overall, MV's opponents are averaging 40.3 points per game against MV (including Central's 77) and score on average 50.6 points per game against everyone else.