If you look at the top of the nonP5 (BYU/MWC/AAC), Pac 12 has a losing record (6-7)

Overall: 10-7
Against BYU:               1-1
Against MWC:              4-4
Against AAC:               1-2
Agaisnt Others:            4-0  (Kent State,NMSU, NIU, North Texas) 

Games:

Arizona LOSS Hawaii

Utah WIN BYU

UCLA LOSS Cincy

ASU WIN Kent State

CU WIN Colo State

WSU WIN New Mexico State

USC WIN Fresno St

Utah WIN Northern Ill

Oregon WIN Nevada

UCLA LOSS SDSU

Oregon State LOSS Hawaii

WSU WIN Houston

Stanford LOSS UCF

Wash WIN Hawaii

USC LOSS BYU

CU LOSS Air Force

Cal WIN North Texas