if you mean what kind of opponent the hawks can handle I would say a more run heavy team with a lesser passing attack. PSU beat down the hawks because of the zone read formation and a great running back, a very good running QB, and and big play passing game. If I have a choice it would not be a zone read type team with a fast running qb as those teams give the iowa defense fits.
I assume Arkansas is a more run heavy like BB coached at Wisky. I can say I wouldnt want to play Louisville or Clemson.