Uhhh, you guys do realize that Bolt isn't even close to being the fastest man in the world in the first 40 meters of a race? If you review all of his films, the ONLY time he was even tied for the lead about ~40yards/meters was when he set the world record at 9.58 and he was only tied then.
Running 100m is totally different from 40 yards. There are lots of people who regularly beat him to the 40 yard mark in every race.
This is a silly discussion. He is clearly the fastest human being on the planet at 100m but not even close at 40 yards.