Guild Wars 2

So a short while ago I finally managed to get through Arah story mode without getting stuck in any of the bugs that stop the progess of the dungeon, I report back to Trinity Fortress and get my story questline completed and I’m rewarded with a loot bag that would give me 5 “random” items. Sounds cool right?
My question is: Why the hell did I get level 30 gear from it?
To be precise I got a lvl 64 green heavy chest, lvl 31 blue rifel, lvl 80 blue shortbow, lvl 49 blue spear and a lvl 37 blue medium chest.

I know it said the items would be random and it’s fine, but for something like killing Zaithan the big bad elder dragon that raised Orr from the bottom of the ocean raised armies of undead… wouldnt it kinda make sense that you’d get random lvl 80 gear from the loot bag at least so there’s a chance some of it will be usefull?