I was messing around with the UESP build editor to try and see how much damage I could get with a magsorc light attack build (as in...buff up, throw down aoe's, and just light/heavy attack without using any spammable ability)....and the editor seems to use a different formula for shock staff light attack damage than for either of the other destro staves.
It treats it as DoT damage, and even with the class passives boosting shock damage, it calculated shock staff LA damage to be about half that of fire or ice.
I have no idea if this is correct, and I understand the UESP build editor's calculations are estimates...just wondered if anyone happens to know if shock staff LA damage is indeed calculated differently or not.