I think both x &o's and Jimmys and Joes are important BUT there are so many other moving parts. Recruiting isn't that reliable since a lot of highly-ranked recruits enter the portal, flunk out, get arrested or can't play.

Fuente was supposed to be a QB Whisperer but most of his QB's entered the portal and the QB's didn't show much improvement. Fuente's offensive scheme also puts too much pressure on the QB by exposing them to too many hits.

X's & O's become important when a team doesn't have a talent advantage. A team doesn't need to rely on X's & O's when they have guys who are stronger, faster and can jump higher. That's why I only look at a team's performance in big games or against teams with winning records.