User blog comment:Sorairo/On the Topic of Dust: Explanation?/@comment-12720931-20130813173032/@comment-15108745-20130813174606

I think that you can infer that powder is more powerful from the narration.

The narration says that man developed a weapon to use against the Grim and this weapon was "appropriately named: Dust"

From that, I assume that the powder form of it is the weaponized and therefore more powerful form.

And what exactly does "pure energy" mean?