What is the point of the large scale leves?

[Arkenne]

which one's?

Dunno? I only use them if I have a job at like... lvl 58... ran out of any other bonuses in the challenge log and really... Im sitting at 100 leves almost all the time anyway.
The armory bonus doesn't apply to the leve reward btw :/
Even if they are only half the exp you get from them (or 3 if you so prefer) it still feels rewarding (altho fake) to see those 170k exp come up in one go by battling 3~10 mins.

Tho if you are at peak times for FATEs, those beat leves by an mile and half (normal or large)