Tha makes a HUGE Difference in 2 of the last 3 years. Only 2 ranked non-USC PAC 12 teams in 2017 and 2016. And, gives the B12 FOUR ranked teams in the top-16 in 2 of the last 3 years:

2018 PAC: #9 UW, #21 WSU, #23 Utah, #24 Stanford (average: 19.25)
2018 B12: #5 OU, #16 WVU, #17 Texas, #31 OSU (average: 17.25)

2017 PAC: #9 UW, #14 Stanford, #34 Utah, #38 WSU (average: 23.75)
2017 B12: #6 OU, #11 OSU, #12 TCU, #15 USC, (average: 11)

2016 PAC: #4 UW, #18 Stanford, #26 CU, #34 WSU (average: 20.5)
2016 B12: #6 OU, #10 USC, #11 OSU, #16 KSU,  (average: 10.75)