This is actually fairly probable. All of the world's fastest footballers would have very close and nearly identical speeds. It would be the same in athletic events like 100M. All should be approaching the upper bound of physical possibility.
Come off it.
100m runners are directly competing against each other on the same track and with the exact same objective.
Exactly. In a 100m race they are all running at 100% of their capacity for the whole thing, along the same flat track in the same conditions. Doing something like this across a league of matches throws up so many variables such as: is the player fully fit, the surface and whether they're running up/downhill, is the player running as fast as possible, the weather conditions, etc etc.
It's a load of bollocks. No way is Wilshere faster than Walcott, and Danny Guthrie the second fittest player in the league.
They've made this report up. It's pie in the sky.