[QUOTE=carpediemracing;21408535]Speed trumps position until speeds plateau. Then position usually trumps speed. This from a more amateur racer where it isn't flat out for the last hour before the sprint. For pro races, since most sprinters are virtually the same in top speed, it's about position and how fresh you are (aka how much of your top speed you can hit).
I would think that a big guy, like Marcel Kittel, would have more power and generate higher top speed than a small guy like Caleb Ewing. If they were all to start in the same position and at the same time, I think top speed would vary greatly.