Be wise enough to know recruiting rankings mean little.I think it's going to come down to dudes. And if recruiting rankings mean anything Penn State simply has more of them. We have 45 4-stars. Iowa has 6 and I think one might be a backup QB. Don't have time to look it up right now - going from memory. Last I checked 18 of our 22 starters were 4-star in at least one service. The other 4 are guys who played pretty good college football elsewhere (JC for Brown and Brisker, Temple for Ebiketie, Duke for Tangelo).
Iowa considers themselves having a GREAT recruiting year if they finish in the nation's top 30 in any year. For Penn State, that would be considered a disaster year. They have won quite a lot under Ferentz for the past 20 years with low rated, under-the-radar recruits. Iowa's coaches do a phenomenal job coaching players up once they arrive on campus. Additionally, I think the entire recruiting services "star" system is totally flawed as many kids are given stars based on WHAT specific schools show an interest in them. Iowa competes more against MAC schools for recruits than it does Power 5 schools usually and those kids just aren't going to get the fanfare the more heavily recruited kids will.
There was a kid from Erie,PA many years ago with one schollie offer when Iowa came calling. His name was Bob Sanders. Went on to be probably the biggest star defensive secondary player in Iowa history. Could line up dozens of examples like him at Iowa through the years-- he's just one of the best well-known. TE Dallas Clark was a walk-on to Iowa. Chad Greenway played 8-man football in South Dakota who didn't have one other major scholarship offer when Iowa signed him.