Charms, Pet XP and Kill Order?

[Daldaen]

Once charm is broken, all damage that mob dealt is wiped away in the EXP awarding calculation. This happens for both your charmed pet and the NPC your pet was fighting.

For example:

If a warrior melees a mob to 10% HP, and then you charm the mob. When you break charm, all that damage is wiped away, like a memory blur would.

Likewise if your charmed pet is meleeing a mob to 10% Hp, and then you break your charmed pet. All the damage he dealt was wiped away and you could nuke his old target for full XP.