Given the history of Heisman winners in the NFL you could theorize that getting the Heisman should immediately bump a player to the second day of the draft. A few succeed but they are by far the exception.
It’s one thing to play against one or two defensive players that are potential NFL quality....but when the defense has 11 NFL-Quality defensemen, it’s a whole different world.....90% of the things you get away with in college will get you killed in the pros.