that 50-58 test pissed me right off

what is to say that they both hit the breaks:
a. at exactly the same point in time, at 50mph you are travelling at 22.4 metres per second, at 58 you are travelling at 25.9 metres per second. a .1 second delay in applying the brakes after the cone would equate to 2.59 metres further down the road, im guessing it was more like .3 of a second after the cone he hit the brakes at least.

b. can they scientifically proove the police officer applied the brakes in exactly the same way, did he simply slam them on and let the car stop wheels locking etc via abs, or did he vary pressure manually, and hte same for the presenter?
c. what was the conditions of the tyres/discs/pads/suspension? They may both have been the same car, however heat cycles affect braking efficiency as does the suspension and tyres. I doubt they where both straigh off the production line with delivery mileage.