Sorry been busy all day today and haven't had any break yet myself... orz
I see 2 of the 3 posts already got official one, only one remaining is that artifact one.

Basically says AF will be better than gear with multiple materia melded but in future they will release crafted gear that can pass the AF gear stats and it was named artifact rather than job specific equipment since lots of players were attached to the name Artifact but there will be some JSE so think of AF as special version of the JSE.