[DeathsSilkyMist]

When looking at DPS, you can see that you will only lose 20-30 DPS when picking a Shaman over a Mage. Using Troxx's Data, you can see that two charmed level 47 mobs with a Torch and Haste would do 86x2 = 172 DPS. This means you are looking at a difference between 255 DPS and 225 DPS. When killing a mob with 8000 HP, the difference would be 31 seconds vs. 36 seconds. The Mage is only saving 5 seconds per kill, and offers very little else. A Shaman's toolkit on the other hand has a much broader application, and will save your group time in other less quantifiable ways. I see very little reason to pick a Mage over a Shaman.