From reading around the forums and the wiki seems like the mage and pally are the two top classes to crush instances with for leveling your boxing team. I noticed that from time to time people insisted the pally was better for this purpose. I am not exactly clear on why. I will tell you what sense i made of it.

From what i can gather both the mage and the pally will both be able to clear the instance faster than others and with zest, but that the pally will be a bit faster than the mage. The pally will be faster than the mage because they can pull greater numbers of mobs all at once. Part that i am undecided on is the dps of their aoe? Can the pally really kill all the mobs they have pulled as fast as the mage even if the mage needs more pulls? Seems like the dps on the mage would be far better? From what i can gather the pally needs to be spec for prot but then in some healing or spell damage gear to make it work.

So a prot spec pally in healing gear is the way to go but a mage will work too if you are short on pallys?