Originally Posted by RiceHigh 
If it's Pentax who "copied and pasted" the AF system from the K10D into the K20D, what's the surprise here? Why we have to impose conspiracy theory to the testers when the results are unfavourable? :-)
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!