Umm...He actually runs a 4.7, not sure where you got 5.0. In any case "Burst around the edge" speed is way different from a straight 40yd sprint. A lot more to do with agility and footwork.
Here:
http://www.huskerboard.com/forums/index.php?showtopic=16360
I'm sorry, but 5.0 is slow for an edge pass rusher. I'm sick of the cosgrove mentality of having 3 DT's and one speed guy on the "open end".
Carriker, as good fo a DE as he was, should have been a DT in college.
According to Scouts.com, he is a 4.7 speed. http://nebraska.scout.com/a.z?s=204&p=...amp;nid=3040030