Basically it's saying that resin offer better modulation, but sintered offer better power, also for those who wish to have a quieter brakes, a finned sintered mean it can cool down quicker to reduce chance of squealing due to heat build up, almost as quiet as a non-finned resin even.
Lastly (again), there is a possible reason why some people says resin is better, is that there are disc rotor that are resin-only, meaning it work best only with resin pads due to the softer material.
TL:DR; our understanding is correct, that article you posted is a wet sausage.
That article is a little confusion since it claim resin have more bite/power than metal.
I did a quick search for similar article which said differ, MBAction said that the pads have an on/off feel that achieves maximum power quickly as the lever is applied, Merlin said that sintered offer lots of power at the ultimate top-end power, whether resin have less, lastly, here is a chart showing a good break down of each Shimano's disc pads;
Basically it's saying that resin offer better modulation, but sintered offer better power, also for those who wish to have a quieter brakes, a finned sintered mean it can cool down quicker to reduce chance of squealing due to heat build up, almost as quiet as a non-finned resin even.
Lastly (again), there is a possible reason why some people says resin is better, is that there are disc rotor that are resin-only, meaning it work best only with resin pads due to the softer material.
TL:DR; our understanding is correct, that article you posted is a wet sausage.