Well, if I tank...
my first priority is to gather all enemies in my melee range, so I don´t have issue with holding aggro because of my skill range. If the enemies are dispersed and I use aoe taunt as opening attack to collect them, I don´t want to stun them. The taunt and stun have same duration and if enemies are not after 5s in my melee range, I can´t follow with another taunt and of course I will lose aggro on all enemies outside of my melee range.
This is at the beginning at the combat. If all enemies are within my melee range, I have no issue to stun them and mitigate damage this way.
Ich bin kein Deutscher, sorry für Grammatik.
English isn't my native language, sorry for mistakes.