Better or worse: Equal
The defensive line should be just as good, if not better, than the 2020 version even with Austin Faoliu and Jordon Scott gone. Those two had solid careers in Eugene, but I have high hopes for Brandon Dorlus and Popo Aumavae. Those two could be even better than their predecessors.
Dorlus had a solid sophomore season, recording 14 tackles with two tackles and a sack in just seven games while Aumavae had 12 total tackles in five games.
Those two should be tough to handle for opposing offensive lines and you add in guys like Kristian Williams and Keyon Ware-Hudson and you have a strong interior.
On the outside, obviously you have first-team All-American candidate Kayvon Thibodeaux who has been dubbed the best player in college football heading into the season. He will make this line just as good, if not better, with another big season and Bradyn Swinson will be a very capable backup to the All-American.
The Ducks should have no problems in the trenches.