Obvs if the tank doesn\\'t use any aoe emnity managment skills at that time = what is the tank doing? Lol
But op didn\\'t really clarify so u assume otherwise.
I also hate it tho, when the tank gets pummeled and dies and the mobs all transfer onto me, but i can literally survive for quite a while tanking 2-3 mobs in most of the dungeons ( depending if they put debuffs on me i.e paralysis or have an insta cast attack that deals tank busterish moves) but dps half the time seem not to clue in and refuse to attack and finish off the mobs cuz they r scared and they start running back or other odd stuff.
Technically if ur geared , ur mp bar is like a second hp bar. U\\'ll only last as long as you can cast heals lol

But op should really clarify on how they reacted to the tank and dps playstyle during that instance.