Performance of PQI 100X 4GB compact flash card.

We had a long standing debate about the quality of PQI high speed cards and several self proclaimed nerds reported it as a slower card compared to even 50X Kingston pro seriese cards.
Anyway, I recently came accross a 4Gb 100X PQI card and tested them side by side Sandisk Ultra II 1GB.
The speed of these drives were measured using a self-powered USB 2.0 card reader. In both cases, the cards were formatted thru PC before testing. I used Radkill's Disk Speed program to get a rough idea.
The screenshot on top, was from PQI, while that on the bottom was from Sandisk. According to my testbed, PQI and Sandisk UT2 has almost similar linear read speed rate, but PQI beat Sandisk to ground in random read speed test. I have check the speed of Kingston elite pro card, but teh read speed was significantly lower in both tests.
In real shooting mode, I am yet to discover any speed difference between PQI and Sandisk UT2.