Quick reply while I have a sec. @Reply #5 - good point! I usually take a similar route by looking at the actual material density and Shore A hardness ...
Saving this whole thread. So much good info here you guys are awesome.
For your situation: 1. Moto uses proprietary tech. 2. PD bricks wont hit 125W and might overheat... 3. Id just stick with official bricks to stay safe...