Have you guys ever considered that uh, PVP medallion is an uninteresting choice of equipment and that every race should have EMFH baseline ( as in, everyone has a CC breaking trinket built into their character ), and humans get something else?
You seemed to have ignored some of the finer underlying points which is fine, i'll highlight them a bit better
I wont argue the strength of Shaman vs Druid, they're both obviously exceptional healers.
And yes, I agree that training a healer is more less equally as viable ( or unviable depending where you stand ) regardless if you're a Resto Sham or RDruid granted you have the proper support. Any comp that can kill the rSham in rSham+Moonkin is probably as capable of slaying ele+Druid.
However, the main point here is how squishy Moonkins are, you can argue that they have superior healing and whatnot, but they are so much more susceptible to burst windows which is what is scary for attrition comps like LSD/2, that alone makes LSD more consistent for ladder and tournament play. I would also like to point out rShams are susceptible to hard swaps which leads me to my next point...
Yes, there are cons as well to having primary CC attached to your healer but step back and look at it this way. Ele+Rdruid is capable of far more lockdown and CC than Moonkin+Rsham. Since moonkins are so susceptible to dying - far more than an Rdruid -, they will have far less chances to push up and CC, ESPECIALLY when you're factoring in SoTF. The point here is that Rdruids will have way more opportunities to get effective clones than a moonkin, and it comes at very little risk for the rdruid and extremely high for a moonkin.
I dunno, I can go on and on about how much more effective Ele+rdru is but I feel like it should be obvious, playing against Blastabadar+Sodah is a nightmare in comparison to like, Maorimoron+Rsham of his choice simply due to comp, all extremely excellent and top notch players but the class disparity is significant.
The common theme here is really just Moonkin+Rsham comps come with more risk and a smaller margin for error than Ele+rdruid.
Resto shamans do not "outclass druids by far", in fact I would say Resto druids are superior to shamans by a fair amount.
There are so many reasons why LSD is superior to LSD2, but I will leave you with this, both are attrition comps, and resto shamans are a liability in attrition comps as they can be trained to the ground - not that resto druids bypass this by any means, but are far more suited to handling it -, on the other side of the coin, Ele shamans are infinitely more tanky than a moonkin especially. LSD2 has too many liabilities for an attrition comp in comparison to LSD where all three targets are effectively unkillable by a vast majority of comps.
Also, having a decent chunk of your teams primary CC attached to your healer is very powerful as opposed to having it on a DPS that is going to be the target of choice, especially a short range CC like Cyclone.
On top of that, you're ignoring the fact that Eles sustained damage is just like everyone elses with Unleash+LBolt hitting super hard, Lava Burst procs just seal the deal, RNG isnt going to fuck you over for 20 mins straight, the stars will align. Purge being such a powerful tool whereas moonkins don't get access to it, and Rshams not always having the time to do it - They can symbi it from a shaman however its almost mandatory for Moonkins to symbi a warlock. Symbiosis synergy is also vastly superior when talking about LSD, giving it ridiculous lockdown options or additional healing.
With the massive amounts of changes in WoD and the nerfs to CC, you cannot allow instant-cast healing to remain as strong as it is right now. They most definitely seem irrational at this point in time but until we actually see how arena plays out in WoD with the rest of the planned changes, I wouldn't jump to conclusions quite yet.