To reach the low response times the BenQ FP93GX uses something called Advanced Motion Accelerator, which is designed to speed up the crystals twisting by increasing the voltage. However, let’s clear this up straight away. The quoted 2ms time is something of a misnomer. BenQ is stating the grey-to-grey time, as opposed to the full pixel on/off time. However, it’s not clearly defined from what and to what stage of grey this actually is. The manual tacitly admits this, giving the actual response time for on/off as 6ms.
Well i know for a fact that a lot of other LCD panels from other companies also quote their numbers as "grey-to-grey". Sony quotes 8ms on their new TVs, same for Samsung, and they're both grey-to-grey. So a 2ms grey-to-grey still sounds quite good... Difference is that the Benq is a PC monitor while the others i mentioned are TVs, therefore bigger and we all know that on bigger screens things look different.