There is also not much explanation about what are the the artifact gears 2 (AF2).
All we know so far is that it is al older version of the JOB gears we know so far. But what about the ancient jobs like WHM, BLM, SCH and SMN. Its is really an older or newer version on that case?
( It wouldnt fit with any of the first 3 mensioned beacuse the current relic weapons they hold were created when job was "founded", like the case of Shanttoto)