The main difference? The processor has taken a hit in terms of processing power, as there is no more Snapdragon 820 chipset from Qualcomm. Rather, that has been replaced by an upper mid-range Snapdragon 652 chipset, which will feature a quartet of Cortex-A72 and an equal number of A53 cores, albeit with an Adreno 510 graphical unit that will power the 5.3″ QHD display.
There will be just 3GB of RAM as opposed to the 4GB of RAM on the LG G5. Latin America has picked up the S652 model as a cheaper alternative, and perhaps this is the same logic that drives the China model. One will still be able to enjoy a dual 16MP shooter at the back, 32GB of internal memory and Android 6.0 Marshmallow in tow.