The fastest I ever ran was a 4.69. Most of the times I was timed at high 4.7. I wasn't slow. I didn't have great speed but not slow. I saw 2 people run legit 4.4 in college. Both got drafted. The thing is, I was considered "below average speed" when playing ball in college. But after I quit and started playing intramurals, I was BY FAR the fastest out there...and that was after I stopped conditioning, started drinking a lot of beer and gaining weight.
The people that say they run 4.6 or less are completely full of shit. I don't believe any body that tells me that really...