Ok, so noticed something wrong.
I just did my roulette and ended up in a 70 trial. my addlo seemed the same as when i was lvl 80 so i tested, just to compare the number.
As a lvl 70, level sync so no materia, my addlo were basically 9200-9400.
https://imagizer.imageshack.com/v2/1...921/xew5ju.png
As a lvl 80, ilvl 341 full melded.... i basically do the same !
https://imagizer.imageshack.com/a/im...053/evBw6g.png
I have 10 more level and 31 more Ilvl. My weapon have +7 magic damage. Why the hell is my addlo doing exactly the same as when i'm lvl 70 ?