Iowa finished a very close second(UW was slightly among overachievers who play in good conferences. Boise State, TCU, Utah, WVU(The Big East is NOT a good conference) etc are good teams but, play in poor conferences. They play weak schedules and beat up on patsies while impressing pollsters, resting starters, avoiding critical injuries, and preparing for their better opponents. No disrespect to the teams I mentioned above they deserve credit for their success but it's a different animal having to prepare for a Big Ten schedule than Boise State's...
2010
Virginia Tech(a top 25 finisher. A 33-30 win. Good win)
Wyoming
Oregon St., a second tier but, decent Pac-10 team. A decent win.
New Mexico St.???
Toledo MAC team
San Jose St.??
Louisiana Tech??
Hawaii, weren't they complaining about not being in a BCS game a few years back?
Nevada, a loss. Nevada is a pretty good team.
Utah St. Really?
Utah, a good win
They finished after the bowl game(obviously this helped their SOS) with the 81st toughest schedule in the country. TCU, the 76th best. Consider this was Boise State's HARDEST schedule in years. The 2009-2010 season their SOS was 96th, 2008-9 94th, 2007-8, 113th. I'm not arguing here that BSU or TCU aren't good teams but, it's a different animal when you have to play Arizona, UW, OSU, MSU, Northwestern, and UM. Even weak sisters in the conference can reach up and catch if you're injury riddled or simply on an emotional down. There's not much coasting there. Not pulling the starters just after the half and sparing them aggravating an injury or worse.
So, looking at it purely from a winning percentage versus the recruiting ranking is a bit of a shallow analysis. It's interesting but, it's more of a starting point than the final analysis of who are the top overachievers in the country.