3 total heroic logs and 1 mythic log for Balance druids got to 500k on Xavius.
Mages, all of the top 10 are above 675k on heroic, above 650k on mythic.
Hunters: 600k+ heroic, 550k+ mythic. Locks are basically the same.
Priests are all over 800k on both difficulties.
But yeah druids are totally competitive with the other ranged classes /s