I do think people under play the amount our characters must have increased in power over the years, not that I'm suggesting we could take the LK without help now, though, who knows really.
One thing I would say is in reply to Adeptus Mechanicus looking Cattlehunter guy is that the LK had a vast near continent spanning empire we had to fight through, which took up the majority of the expansion (including some very interesting (Ulduar) and a less interesting (ToC) diversions), whereas with the TK, he was only just starting to get back into the swing of things, which we, luckily nipped in the bud before he took control of Pandaria again.
Equal to the Lich King if not stronger.
They're stories, and the characters exist to move along the plot. As a result, they always have the power necessary to make an interesting story. Sargaras is supposedly so amazingly powerful... yet he is defeated and outsmarted by mortals. Which also throws in to question the entire premise that an entity's "power level" has anything to do with its ability to win a fight. When pitiful human brains are outsmarting supposedly immortal God-like entities, what does "power level" matter anyway, even if you could define it?
By fire be purged!
Race created by titans
Tore out the heart of a titan watcher
Forged an entire empire
Controlled various titan devices
Got resurrected from the dead
Vaporizes enemies with lightning
Now what did the lich king do?
Science class is thinking that objective facts about a fabricated universe exist in the first place. Does warcraft universe have a graviational constant? Does it obey the laws of thermodynamics? What are the limits of the magic system?
We have no information whatsoever about Lei Shen. He supposedly died of old age, how come the trolls can even resurrect him? If they do, why does he not resurrect as old and infirm (and about to die again) instead of young? Do we know what aging even does to a mogu? How long does a mogu even live? There are literally millions of questions that are relevant to these types of inquiries for which there is absolutely no answer, which is yet another reason why its a meaningless inquiry. There is no definition of what Lei Shen can do. There is no definition of what Azshara can do. There are simply no facts with which to base any of these assertions.
The only remotely objective manifestations of a characters "power" is what is defined by the author. Which means that their "power" is whatever the story needs it to be to be interesting. Azshara is exactly as powerful as she needs to be to be a threatening villian, just like deathwing. Just like Lich King. Because its a story, not ab objective reality.
There seems to be something very wrong with your lore man.
Galakrond was no titan. He was a dragon. While it's still impressive that the lichking tried to ressurrect him, it is nowehere comparable or even save to say he could do the same with a titan.
Back to topic:
People tend to forget, that the lichking had several super-uber-oneshot abilities. Not only in game, but also in lore. His power was so vast and insane, that he easily defeated a lot of enemies.
It's sick that Lei Shen defeated a titanic watcher, and that he was shooting lightning bolts afterwards, but the LK had/has powers far beyond shooting lightning here and there.
LK > Thuderking all the way
He is thiiiis powerful!
*Opens arms wide*
There is no objective definition of the characters. The very fact that this discussion is utterly meaningless is what makes literature great. Because at any given moment you can find out that Azshara can do some new thing you didn't know before and that makes the story compelling. You're taken in, you ask "what can happen next?" Anything! That is what is great.
It seems utterly foreign and weird to me to want to try to boil down every warcraft villian to their "power levels" and then decide which would win in a fight, as if its a matter of mathematics. its not, its a matter of story (hopefully good story). Not only do I find it weird, I think its also completely meaningless because there are no strict definitions, anyway. And if they did exist then every storyline would simply be resolved by who is stronger/smarter/more cunning. You just go to the flow chart. "Oh, says here that Lei Shen is a power level of 52 million, and Deathwing has a powerlevel of 100 million. I guess we know how the story goes."
i'd put him as slightly less powerful than the lich king. i mean when the lich king died, technically so did everyone who killed him...(sort of) until terenas resurrected us.
the only reason that fight was even winnable was because of Tirion and the Ashbringer
"Brace yourselves, Trolls are coming."Signature By: Mythriz
Nah, I wouldn't say shaman. He doesn't ask for the elements' help, he took that power from a titanic watcher (Master Ra/Ra-den), so he's not a shaman.
What he really is is a really notable warrior that empowered himself with thunder and lightning, stolen from Ra-den.
About power and shizzles, he could down a titanic keeper without the thunder power, so he was already really strong... I'd say he must be close to Illidan, or maybe even stronger. I mean, we killed him by ourselves, so we can't compare it to LK, that needed a miracle from Tirion and the Light.
TL;DR: Warrior Thunder-Empowered, on par with Illidan, weaker than LK.
Pretty funny to see how everyone think he's stronger than Arthas, Illidan, Kael'thas and the likes. Yet, to me (and I don't really know the lore) he seems like a pussy. All those previously named big figures played a huge role in the game and came to interact with the player one way or another. Just based on that (haven't seen him other than LFR) makes me think of him as a disposable boss like Void Reaver.
At best he is on par with Prince Malchezaar. Just some guy.