Boise State was near the top during the last 2 years of the Kellen Moore years -- aside from the occasional Fresno State or Nevada, the WAC was a very weak conference. They also held Oregon & Georgia to seasonal lows for offensive production.
They year Alabama won a national title over LSU they posted a 4.2 YPA defense, the top team this year has a 5.3.
Say Ohio State did play a very weak schedule, isn't a 50something-0 victory they way you should handle a weak opponent? The overvalue of strength of schedule actually makes soft schedules tougher because no matter how badly you crush every opponent people will downgrade you. There is an irony involved with TCU fans making strength of schedule arguments against Ohio State of all teams.
If the logic was applied to the NFL the Cardinals wouldn't have had a pretender label stuck on them all season, you could make the same cases as far as quality wins, only NFC South have tougher schedules than the NFC West. The win percentage of opponents defeated is the highest in the NFC and only trails New England & Denver in the same category. But there are legitimate efficiency concerns, especially in regards to their offense which has a stalling problem every single game. Seattle is clearly better at defense and Green Bay is clearly better at offense. Arizona certainly isn't going to win beauty contests.
There isn't any credible disputes when it comes to Alabama's strength of schedule but their efficiency numbers indicates balance with the drop-off in pass defense but they are clearly better than Florida State in all categories which actually ranks below Ohio State on strength of schedule. Oregon has a high strength of schedule rating but their shortcomings on defense are measurable, only Florida State ranks below them--significantly.