There is no comparison between Stanford and Tennessee. Stanford's DBs and OLBs are in a class of themselves. They don't have that big of front either. They are tall and rangy. Mauro, Anderson, and Gardner at DE/DT are of the 6'5" 275 variety (this is important because they aren't too big to string out plays). The nose tackle in Parry isn't even 300 pounds. They use huge linebackers that play in space. We're talking 6'5" 260 OLBs and corners that are 200 pounds. Where they're big is on the edges. Likewise, they have the best safety combo in cfb. Richards and Reynolds are both projected as 2nd round draft picks.
We have the best edge blockers in CFB with our WR and pulling linemen. The way to beat that is to be big and athletic on the edge. A 4-3 defense with 260 pounds ends and 230 OLBs and 180 corners is just not anything we don't see on a regular basis. Jordan Williams is the kind of athlete that can disrupt the ducks but the problem is he plays with his hands in the dirt. Leuders and Tarpley (Stanford's 6'5" 260 OLBs) are stand up OLBs that know how to play in space by virtue of role and responsibility.
The only 4-3 defense to hold us below 35 was Auburn. The DTs had elite first steps and disrupted the mesh point. However, they gave the boundary to Darron Thomas and he didn't make them pay. That game played with Mariota would've gone the ducks way.