The Black Powder "BPCR cartridge" granulation from Swiss is 1-1/2f or 1.5f. I am not sure about Goex's cartridge granulation.
In my limited testing with 1.5f Swiss, it seems pretty similar to 2f Goex in volume-to-volume comparison. Swiss being faster seems to offset the larger granuation of 1.5f versus 2f.
I don't have a chronograph to compare, but I hope someone does and makes a comparison. In my single test, the recoil felt about the same, and the elevation on target was similar.
I think Dan Phariss or Bill Knight would have the answers.
I hope this helps a little. God Bless, Marc