Tim Tebow. Troy Smith. Jason White. Eric Crouch. 

Those four names represent a clear history of the fact that the Heisman Trophy does little to guarantee NFL success. Or even NFL draft success. Will the 2012 Heisman class be any different?

Of the five likely finalists—Manti Te'o, Marqise Lee, Johnny Manziel, Collin Klein and Braxton Miller—which players will have the hardest time adjusting to the NFL game? We know that Te'o and Lee are two of the best players at their positions, but what about the three quarterbacks?

Let's take a look at which Heisman finalists will have the highest potential fail rate in the NFL.