Originally Posted by pareto 
Hello RiceHigh!
I'm not imposing conspiracy but rather laziness. Maybe Pentax has copied and pasted the AF system. Maybe it's slightly faster, maybe it's slightly slower. Nevertheless getting 100% the same results is extremly improbable. They measure the focusing speed in 9 different light situations and determine the respective time down to a hundredth of a second. As you know every measurement has a specific error; so getting exactly the same number at this accuracy is very unlikely even in equal situations and with a single cam. Take an optimistic guess of p=0.5 for getting the same time for two measurements on equal hardware down to a hundredth of a second. The probability for a series of 9 exactly equal results is now p=0.5^9=0,00195.
If you consider that the 0.5 is rather high, they used different cameras, probably different lenses and maybe different persons to push the release button and to take the time, the whole AF speed test indeed is surprising.
Have a nice day!
I disagree. You need to work on your statistics.
Let the true population distribution of the AF speed at a given light level with a given AF unit and voltage supplied have mean 1 and standard deviation 0.05.
Then, let the true population be estimated by a study with sample size n=100 tests.
The distribution of x-bar will have mean 1 and standard deviation of 0.005. Thus the probability can be easily calculated that if PopPhoto's tests are accurate, there would be approximately a 95% chance that a second test will yield the same results as the first at each light level if exact to the .01 level. At 9 light levels total, there is approximately a 63% chance of identical results.