most damage over all is definitely hunter.
hunter has the highest damage per gcd with serpent sting . a boomy has to do 2 dots to get around the same damage as one hunter dot . ele damage is ok but a hunter will still do way moreBoomy and Ele are pretty on par with hunter in terms of pure dmg.
Just in my experience, Hunters/Boomkins/Elementals can all put out similar damage in a premade situation. Namely, where they don't have to worry about silly things like "Am I getting healed?"
I think Boomkins are at the top, actually. Followed by Hunters then Eles.
They all have different styles of play in premades, and frankly all of them are pretty much essential to a group.
Not entirely sure what the question is asking, but as far as multi tasking, holy pallys then boomies then ele sham. Then maybe enh, anything else just cant do a whole lot of multitasking.
forgot to mention but disc is probably the best one followed by hpal.
idk. They have the burst with penance, but that is basically it. They dont rack up numbers like the other 4