>>5657983The nice thing about Dark Heresy is the excellent amount of lore put out by Fantasy Flight, which even after their separation from GW the company still respects and canonizes and in many ways shaped the lore of 40k.
Also that the various different games (Dark Heresy, Rogue Trader, Only War, Black Crusade) are all intercompatible.
I've yet to hear that W&G get into the same level of depth and detail with the lore and setting as the FF content did, they helped defined entire sectors of the galaxy.