No it doesn't matter, everyone just remembers back to the good old days when Boyd Epley published all the top marks for each position and how everyone got faster, leaner, bigger and stronger.
Which in and itself means nothing. Curtis Cotton was an athletic testing freak every year he was at Nebraska. I don't he ever rose any higher than 2nd team at safety.
I remember that as well. It seemed like our fastest guys were always the 2nd string wingback or the 3rd string cornerback or something like that. I think it was the experience of losing all those bowl games to Miami and Florida State in the 80s and early 90s for Osborne and staff to see that they needed to figure out a way to get our fastest players on the field somehow to counter the speed of those teams.