THis thread piqued my interest in the first place because you said Helu wasn't a threat to take it the distance.
Check out Helu's runs at 00:34, 1:34,1:48, 2:08, 3:40 and 7:30.
You can argue if you want that Burkhead is a better pure RB than Helu, but not when it comes to flatout speed.
Scouts questioned Helu's long speed before the combine, but the speed seen on film was confirmed at Indy. When the guy got into the secondary, he was rarely if ever caught.
Rozier was one of the first college RBs to break the 2K barrier. Rushing for over 2100 yards at 8 yards a pop, IMO he was the most dominant player in college football for a two year span,('82-'83). Yes there were other superstars in the college game, but IMO Rozier shone the brightest.
There may be similarities between the two, but in all seriousness I doubt the gameplan of most Nebraska opponents is to stop Burkhead.
You must think Burkhead is going to be a Heisman finalist in 2012, barring injury.