You sure read a lot into "I play a different spec, I don't know much about your spec, please give me more information to better understand your issues".
Ah, I half expected that link.
These logs are only useful if you tweak the data a bit. For example, there's a difference between "All fights" and a specific boss fight. There's a difference between is it mythic or normal. There's a difference between item level for those statistics as well.
For example - sure, let's take "All bosses, mythic, all item levels" - in this case, elemental shamans are 4th from the bottom. But if we look at "Nythendra, normal, item level range 854-856" (which isn't unrealistic), you are 8th from the bottom. Still underperforming, sure, but not as bad off as before.
Simply looking at "All bosses, mythic, all item levels"-logs can quickly give the wrong idea. Someone might look at it and go "I'm in 830 gear, but this list says my class is supposed to suck, so that's why my damage is so low", when at that ilevel, an elemental shaman in LFR is actually listed at 7 from the top.
So my point is, there is a huge difference between ilevel 830 and ilevel 88x. There's a big difference between raiding LFR or raiding mythic. There is a big factor in the people you play with, how good they are, how well boss mechanics are executed and so on. And if we are only looking at "All bosses, mythic, all item levels" then we are not looking at data that represents the majority of the player base.
So forgetting the overall damage logs, how are YOU (all of you) seeing YOUR damage compared to the people you play with? And based off this, back to my original question: Is it really that bad?
Please, please, please note, that I am asking to get better insights in your issues. I'm not trying to create a shitstorm, and I'm certainly not saying you shouldn't be buffed. But I am not seeing the issues with the elemental shamans on my raid team - they are right where they should be. But it might very well be different for people on other difficulties, with different gear, playing with different people. But I'm not asking for logs - I'm asking for how you are doing compared to the people you play with