Incredibly easy for the first couple. Of course it is PvE so it should be expected.

The only way to die in those is if your healer goes afk, your tank goes afk, and your dps forgets they have defensive cooldowns/pots.

Not even joking. I had my healer go afk and the tank died on 2 of the bosses in the 15 dungeon once and I tanked them on my puglist.