College football isn't supposed to have an air of inevitability about it; rather, unpredictability from week to week gives the game its drama.
It's likely that the top teams in major power conferences will suffer at least one loss; we don't know when or where, which underscores the unpredictability.
As for the Boise State Broncos, however, it almost seems inevitable they will run the table. They have a much better chance of doing so than most top teams in the Football Bowl Subdivision. In fact, we can measure this.