This listing combines several different chargers. My review is for  "Qualcomm Quick Charge 3.0 Adapter".
This  wall charger has one port and has Qualcomm Quick Charge 3.0 technology.   I tested this charger with Nexus 6p (using both USB 3.1 compliant and  USB 3.1 non-compliant USB cables) as well as an older Nexus 5 and iPad  Mini that do not support rapid charging.
Using Qualcomm Quick Charger
~~~~~~~~~~~~~~~~~~~~~~~~
' Nexus 5 was charged at optimal rate of 1.02A.
' iPadMini was charged at non optimal rate of 0.93A (which is typical rate when iPad Mini is plugged into a 1A port)
'  Nexus 6p is capable of rapid charging when the battery level is low.  I  discharged the phone to 28% so the phone would do rapid charging if  possible.
'Using Tenswall USB 3.1 compliant cable the highest current Nexus 6p was able to draw was 1440A
' Using PECHAM USB 3.1 non-compliant cable the highest current Nexus 6p was able to draw was 2260A
Using another charger without Qualcomm Quick Charge 3.0 chip
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
For comparison I used a regular (non Qualcomm) charger
' Using Tenswall USB 3.1 compliant cable the highest current Nexus 6p was able to draw was 1320A
' Using PECHAM USB 3.1 non-compliant cable the highest current Nexus 6p was able to draw was 1700A
So  it looks like that Qualcomm charger did significantly better with a  non-compliant cable, but almost the same with a compliant cable. I  repeated each test 4-5 times to be sure that the readings are  consistent.
What is 3.1 compliant cable? USB 3.1 spec specifies  that the termination resistor that advertises the maximum available  current should be set at 22K which advertises 1.5A of current. Benson  Leung has a series of excellent reviews of Type C cables. Benson works  for Google's Pixel group and has pointed out that many type-C cables  violate the USB 3.1 specification that states that the termination  resistor that advertises the maximum available current has been set  incorrectly at 10K which advertises 3A of current rather than the  correct value of 22K which advertises 1.5A of current. The "bug" in  non-compliant cables can be used as a feature of allowing rapid charging  for Nexus 6p.  The phone does not draw more than 2.5A so it does not  damage the phone.  The non-compliant cable could be harmful to devices  that are not limited to 2.5A such as the ones that Benson evaluated in  his reviews.
Using Qualcomm Quick Charger with Qualcomm Quick Chart 2.0 chip
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
One  other point of comparison is that Qualcomm 2.0 charger I have allows my  PECHAM USB 3.1 non-compliant cable to draw 2500A. I expected that 3.0  charger would give me better or the same results.
I received this  charger from Kungix for testing and review.  For Android phone without  rapid charging it worked the same as a regular charger.  For iPadMini it  only delivered 1A, so it was below average.  For Nexus 6p this charger  worked better under some condition than a regular charger, however not  better than Qualcomm 2.0 charger.
You can find "Qualcomm Quick Charge 3.0" on Amazon via this link
AshopZones review ★★★★☆