We know Jamaican Usain Bolt is faster than American Tyson.
A BBC article titled Why Bolt is special analyses the performance of Bolt and Gay at the 100 metres IAAf finals 2009 Berlin Germany.
According to the article Both athletes strides
Bolt needed 41 strides to win gold on Sunday while Tyson Gay, who claimed silver with a magnificent time of 9.71, took 44½ strides.
On How Tyson Gay can Beat Usain Bolt
The article adds If Gay is to challenge Bolt’s world record it would appear he needs to improve his stride length while maintaining his stride frequency – which is easier said than done when travelling upwards of 27mph.
Bolts biggest advantage is that he has legs longer than his fellow athletes, the Jamaican is 6.5fts, which means he has longer stride.
If Gay cannot run faster by improving his stride length then he may consider undergoing surgery to have longer legs? That may work!!!!