Found this info on reddit

Our 4 man group got together and I crafted an entire pvp set (except mainhand) . Below is some information and our interpretation.

Ilvl 90 MNK - Had full allegan/myth, upon using the ilvl 55 his HP dropped from 5k to about 3500, but as the healer, he was much much easier to heal. His damage remained nearly constant

Ilvl 70 WAR - dropped from 7300 with defiance to about 5600 hp, nobody really touched him, so no telling how the heals were affected. His damage increased significantly.

ILVL 75 SMN - dropped a bit in hp, not very much, however the damage he did shot up a TON.

I personally as the WHM did not equip morale, and my regen ticks were outhealing almost an entire groups damage (with kiting etc) while I was slept. After around 50 games, I think all players, regardless of current gear, should get the ilvl 55 crafted set to start, HQ'd. None of our gear had any materia in it, and we went from about a 50% winrate before, to nearly 90% after. I think I will end up getting my set, but only once other groups start to run more morale gear instead of allegan/myth, and the meta settles a bit.

I also tested the +5 sleep resist food, it appeared to reduce 30 second sleeps to about 28.5 or so, and 15 seconds down to about 14. Good, don't personally think its better then normal food