Even if this is true, then who is legit in the BIG? There's no one left to expose that OSU isn't great. Watch the pundits list the top 5 in the BIG and it's Michigan, Wisconsin, Iowa, Ohio State, and Michigan State. I believe Wisconsin is overrated (if not Iowa losing by 4 on the road was certainly a great showing). If Ohio State is overrated, and Michigan is also overrated as you imply by saying our win wasn't that impressive, that leaves a 2 team race between Iowa and Michigan State with Illinois making some noise.
This one will stand up and if it doesn't it just serves to be one less obstacle for Iowa contending for the title of the BIG conference.