I think the top of the SEC since the BCS era each year would be the best team in the PAC 12 of that year. Their Championship game record proves that. However, I feel the SEC in general lacks depth. Outside of the top 3-4 teams each year, everybody else is either extremely flawed or just terrible. You can't tell me Kentucky, Vanderbilt, and lately Tennessee wouldn't also be Pac 12 doormats. Ole Miss, Miss St.. Auburn, Georgia, Florida, and LSU I believe woud also be below average to middle of the road Pac 12 teams this year.
Ole Miss, LSU, and Miss St, can't throw the football. Georgia is Georgia and is a late season let down anywhere, and Florida is about as explosive offensively as UW.