Someone having the best kick after 9600 usually just means that they are the best 10 000 metre runner on the day since they have been tired out the least.
Its not like cycling where people hide behind wheels and can recoup a little energy on a flat runin to the finish. Slipstream is almost non existent. Look at how Rudisha took the front yesterday. In cycling that would be suicide, like Cancellara at msr. But in running he just flew away from them, because even at 26km/h, as they were running any slipstream they got behind him was negligable. 10k is more 20-21km/h so slipstream is even less. The guy who kicks hardest is the guy freshest at that point. Its not a sprint but simply maxing out what energy levels remain.
Its likfe if Cancellara and J Rod arrived together at the top of the Crostis and had a 8k pursuit race on the flat. Cancellara may have the better 8k pursuit, but he would be so knackered and J Rod would be fresh
The guy who came 4th for example, who you thought -pff what a crap kick he has, used to before his injury problems for example do stuff like this.
http://www.youtube.com/watch?v=TRCB-wrPIUY&t=3m35s