btw, on a baron run the other night... i found my warlock to be #2 in total damage for the raid. i was basically tied with the mage the whole time, and i noticed that the mage's primary tally came from AoE. the top damage giver was a skilled rogue.
i noticed similar patterns in an uBRS run. i always knew my lock could shovel out the serious damage (moreso than i think 9/10 wow players realize), and im not even ruin/crit spec'd.
likewise, i was surprised to see how low the total damage was for classes like warriors... and also surprised to see one shaman dishing out SERIOUS damage. on the uBRS raid, i was 3rd behind a rogue and a shaman.
it is very interesting to observe how it works, and how classes function in different situations (i swear that mage had about 30% total damage from AoE in the baron run)
ALSO, notice the "time" field. that is basically a show of total time of engagement in combat. the DPS reading is a very simple breakdown of total damage against time in direct combat (taking or giving dmg). even in the pic above, you can see how different players were/werent in combat the whole time. you want to be careful making too much of the DPS there cuz that's a total average over all the time. in other words, it's not an average of your DPS when you are really fighting. it also counts time healing and doing other stuff, so the melee types will always have more time in and more dps in a sense, compared to the classes who also spend time doing other support stuff.
however, if you just look at it to see the total damage given and taken, it's really fun. plus, you can reset per battle.