The OSU d-line has been between good and really good. The LBs are much better now with Borland in the middle and Baker/Worley outside. Good, but not great. Running of tackle or guard against OSU has been tough sledding since that LB realignment. They simplified it since the Iowa debacle, so the shifts and motions eye candy has not been effective ( something the Badgers do better than anyone).
Where they have still given up some yards is on the cutbacks--something Wisconsin is also really good at.
Covering the tight ends has also improved dramatically since then, but again it is good, not great. Covering WRs is the one area OSU has been super solid.
Overall, the description of OSUs defense is just that. They are good- not great. Solid and athletic.
Wisconsin has the best Offensive Line the Buckeyes have seen since Oklahoma. Same with the TE. And also the best pure RB.
Where Oklahoma got them was a combo of a tired defense ( offense could not keep the ball) overly aggressive LBs who let the Sooner TE and FB get behind them on run fakes, and a very mobile, accurate QB. Between their new alignment and game experience, the Buckeye LBs are much better. Again, good...not great.
On Offense, the Badgers present similar issues albeit from different formations, as the Wolverines. They give you no time to throw and come at you from all angles- but if you can get one and a half to two seconds, are susceptible to throws to the TEs, bubble screens and tunnel screens and WR slants. They are amazing against the run as well. I expect it to come down to turnovers and special teams, as I see both defenses somewhat limiting ( but not completely shutting down) the other team.
I am thinking Wisconsin 28 ish to OSU 23 ish. BAdgers off to the playoffs, which being honest would be a silver lining for me as I like how they run that program.