@ 5.5 ypc against this schedule I'd deem it solidly impressive at the very least. Big difference in SOS from last yr to this yr. And BYU has only had 1 or 2 RBs accomplish as much (1000 @ 5.5 ypc)
For BYU, outside of TA's superb season against a subpar SOS, I'm guessing the only RBs to go over 1000 @ 5.5 + ypc is J Will and Luke? That would make a 1000+ @ 5.5 ypc RB against '21s SOS extremely impressive by BYU standards.
I think TA is a great back. I'm confident he goes over 1000 yds if he remains healthy, but @ 5.5 ypc wont be as likely.