Stanford has won 3 conference titles this century. 5 total in the PAC 10/12 era.
Oregon has won 8 PAC 10/12 titles. Oregon played in two national titles in the last decade.
Washington won 9 PAC 10/12 titles. Washington has finished seasons ranked 6 times in this century. They've had seasons of 0-12 and 1-11.
If you want to claim they arent a blue blood like USC that's fair. If Washington and Stanford are PAC 12 powers, then Oregon certainly is, and I dont think I've ever rooted for Oregon in my life.
As for losing to Auburn, I can tell you another team who lost to Auburn...Alabama. I can tell you a team who only beat Auburn by 3 points...LSU. Losing to Auburn carries little if any shame. As for losing to Arizona State, they lost by 3 points on the road. These things happen.