Just for people who might not be aware (Because it could be simple ignorance, which then it isn't actually a fault):
Player characters aren't anywhere close to as strong in the lore as they are in the game. A perfect example:
A level 90 can solo Illidan in Black Temple.
That does not mean that us as players in the lore are more powerful than Illidan. Because, compare it to this:
The same level 90 most likely cannot solo the Virmen boss in Stormstout Brewery (Or, at the very least, it is harder to do so).
So is that Virmen boss stronger than Illidan lorewise? Of course not.
Its the mechanics of the game versus the lore.
Us player characters, from what little we've been written about in the actual lore, are more like veteran footsoldiers than anything special.