First of all (in answer to your "first of all" statement): what in the world does Tennessee's performance have to do with expressing an opinion in an ongoing discussion about Jeanty. "Ignorance"? That just means lack of knowledge on the subject. I'm not sure how UT losing could in any way indicate "ignorance" on a topic not related to the loss.
Secondly: this was his first game against a good SEC-level defense, and he averaged 3.5 yards a carry. Hardly Barry Sanders level. (Oregon's run defense was 66th in the country in yards per carry against, so, not comparable to playing an SEC nor Big Ten schedule.)
He's a good back, but is over-hyped. Even in this game, the announcers kept telling us how he was always on the verge of exploding, even though he wasn't. It reminded me of when Keith Jackson kept telling us that Tennessee couldn't shut down Testaverde and Miami, while we continued to shut them down.