I averaged the 3pt % for each WCC team in wins and losses. Below is the difference in Ws vs Ls in 3pt% for each team. I put each teams position in the standings in parentheses.

The average difference is 9.93
BYU is basically in a tie for the league lead with 2 other teams. The top 5 teams in the conference have an average difference of 11.68 while the bottom 5 have an average difference of 8.18.

Pepperdine 12.02% (4)

SMC 12.02% (2)

BYU 12.01% (3)

USF 11.78% (5)

Portland 11.13% (8)

Gonzaga 10.57% (1)

Loyola Marymount 10.57% (9)

San Diego 8.98% (10)

Santa Clara 5.62% (6)

Pacific 4.6% (7)