There's no spinning the schedule. When it was scheduled, they were the mightiest program in america. Unfortunately, they went in the dumpster. It was great playing Texas & SC, but there will be Miami's to balance things out.
3 things:
1) You're right. OSU's offense is not a juggernaut, though OSU improved offensively when they shifted back to the running game and away from a Pryor-centric passing offense. They did this last year too late in the season with very similar results. The michigan game was the exception to this, for the first half. They leaned too much on pryor and didn't attack downhill enough. After halftime, they gave Boom the rock inside and he dominated.
One year later, and they made the same mistake imo. Pryor is by far the hardest weapon to stop in OSU's offense, but he just wasn't ready to be that much of the offense. He can make the throws and wants to be a complete QB, but he simply doesn't execute consistently yet. He gets better with time, but he is still working his way up from a very low starting point. He didn't even know how to do a 3-step drop properly when practicing for the Army AA game.
RB Boom Herron has also raised his game considerably. He was always a tough, steady back, but a bit underwhelming. He has really raised his game this year, showing vision & agility that he didn't have before and few if any expected him to develop.
2) Wisconsin & Iowa are top defenses. I'm not sure I agree with projecting those results to Arkansas' defending OSU, particularly their low-ranked rush defense against a very strong rushing squad like OSU.
3) PSU's rush D is comparable to Arkansas'. I'm not sure that bodes well considering what Boom did to them.