darklight requires a cumulative number of tomes by a single player, the crafted can be done by multiple people. Ever seen FC do 2 or 3 quick 8man speedruns and have their main crafter make the crafted gear HQ, sell it, and split profit?

Also, I have no use for anymore darklight, so now my extra from helping friends/capping myth go to making items to craft and sell, or mix with friends who have extra's too