sorcs probably think they can just stand there and spam lightning all day. TBH the sorc stands out like a sore thumb spamming lightning though and gets targeted alot.
Im only lvl 31 on my sage so my talents are mid range but i went just enough points in balance to make TK Throw spammy (force lightning?) and rest is going into healing tree for now. Revitalize(?) can be talented to cause -1 sec cast time for next deliverance and if you have put any points into healing tree you already most likely have another -.5sec to it. So 3sec -1 -.5 = 1.5sec and thats without any alacrity bonus. Im going to stop on healing tree and from lvl 33 to 40 dump 7 points into TK tree to get +20% absorb to the force shield skill. Oh and you can also spec Revitalize(?) to give like a 10-20(?)% defense bonus.
Im not saying this is going to make you, me or anyone else unkillable but there are ways to make yourself harder to kill while still doing moderate dmg. TK Throw and its mirror are retardly OP when modded for zero recharge.