Looks like a standard 5V 2A charger. Have you measured it against another 2A charger to see if it's quicker? Trying to work out what's different.
By the way, the difference between this and QuickCharge 2.0 is 4 volts. Quick Charge 2.0 will deliver 9v 2a. So technically should be quicker then this PlayBook charger.
I believe the HTC bundled charger is actually a Quick Charge 1.0 compatible (1.5A) charger. Quick Charge 2.0 however is disabled at present. So apparently we won't be able to make use of any Quick Charge 2.0 chargers until a software update is sent out by HTC, as there is a chip integrated in to the wall charger which works in tandem with the Qualcomm Snapdragon chip in the M8 for the feature to work.
Sent from my HTC One_M8 using Tapatalk