Yeah that's the biggest question mark.. The defense can't give up 48 points to teams like Purdue and be taken seriously as NC contender. Defense still wins Championships. Offense sells tickets.
The losing team (the LOSING team) scored 40 points in the title game of the 2015 season. The following year, the losing team scored 31.
More often than not, the
losing team scores 23 or more points in the championship game of the CFP. This is over its eight-year history. Not once has the CFP national champ held the loser to single digits.
If that tired old saying was ever true, it is no longer.*
Football teams win championships. Not defenses.
* note: you may be remembering back to that epic 9-6 defensive battle between LSU and Bama back in 2011. That was truly a case of the defenses dominating. But that wasn't a championship game; it was just a regular season match that happened to be all about defense. It happens sometimes, though not often in this era.
Or you may be thinking of 2021 UGa, which, granted, was a superlative defensive team for the modern era. And yet they still gave up double digits in seven different matches over the season, including giving Bama 41 points in the SEC title game. Which makes the point as good as it can be made, since the BEST defense we've seen in a decade or more still gave up plenty of points over the season, and needed a good offense as well to secure the national title.