I have never seen any of the pets do an AoE but also never had the Fallen Hero. I usually do the following for pulling groups:
1) Make sure Grisley Brace is on (if you have it)
2) Make sure pet is buffed full
3) Cast stun on target one
4) Send pet in on one of the other mobs right before the stun hits
5) Once pet hits target, retarget back to the stunned mob and have pet attack
6) Since I usually only pull groups of 2 or 3s I can usually kill the third without pet. If I can't then I stick pet on the third as
well.
7) Cast BoL to increase hate of pet
Let pet do damage and dot/heal as required