Ranking our season opponents vs. stats

BYU football: What to know as Cougars prepares to open fall camp - Deseret News

Looking at the stats from each team (last years) has me scratching my head a little.
For instance,
Notre Dame was ranked #43 in Defensive stats
and #45 in Offensive stats.
and yet ranked top 10 nationally last season.
Not making sense here.

You haven’t figured that out yet about Notre Dame? ND get a lot of love. Anyway what do I care about rankings

ND would be voted national champs every year if there are no games played. But unfortunately for ND they have to take the field and play the games.