It has to do with timing. OSU was at the end of a tough stretch. Just like Michigan with MSU. OSU played bad, Wisconsin played well, but this loss was more about OSU play IMO. OSU was mentally exhausted.
I didn't watch it but that makes sense. Wisco will make the tournament but likely won't make any noise.
But I still enjoyed watching OSU get their asses handed to them. Something Wisconsin has been much better at the last decade in doing to OSU.