Here's a question. What class comes to mind when you think of the one that gets the least credit for its efficiency in a given group role?
HAHAHA! I'm not going to say what you think I am! You think I'm going to say rogue for dd, but I'm thinking chanter! I can't count the number of times one of my melees has been grouped with a chanter, sent out a tell to one of the warriors (of all tank classes) giving them group info, and been declined because according to the tank in question, a chanter only slows the group down.
In my opinion, a well played chanter, especially animator, is capable of creating perhaps the largest damage output of any class in the game in a standard group setting, given the right group. In a group with two quad hitters you have the potential for 8 procs, plus any attacks of the chosen pet, plus their nukes, plus they keep the mana of the group full and let them slaughter as fast as they possibly can without having to hold back for fear that the melee will bleed himself out of power or the tank will lose aggro. End result, wholesale slaughter.