Originally posted by Azronger
1. It is CIS for any iteration of Palpatine to engage in a duel, save for the pre-TPM ones. And no, there's no possibility for Palpatine to draw his saber here, since CIS is off2. Palpatine would certainly be able to break Luke's lightsaber with lightning, but I'm not sure if he'd be able to down Luke with it.
3. Too bad Palpatine isn't going to draw his saber in the first place so this is a moot point.
4. I have told you that it would not make any sense for Sidious to be described as "doomed" in that situation if the lightning were not hitting him. More concrete evidence I cannot provide, but you've not even addressed that singular point which I've raised.
The definition of "smolder" is to burn without flames i.e. to have smoke come out of you. That's the extent of the damage Yoda took, without Tutaminis, so I'd definitely say he tanked it without much trouble, as he feigned unconsciousness, per the junior novel.
But more to the point: if Yoda, and Palpatine, can take hits from something more potent than a lightsaber to the face without much damage, then what's Luke's lightsaber going to do, in a scenario where Palpatine isn't holding back?
1. That's untrue. Palpatine drew his saber against Yoda despite being unsure he could win in a fight (RotS junior novelization).
2. What? I'm saying that he used Lightning at the start of that fight, yet still couldn't keep it from progressing into a lightsaber duel and losing.
3. It's not. It's a response to a scenario you brought up, lol.
4. Except no, the fact that the stream was bending against him meant he was losing the Lightning-Tutaminis war at that point. That is more than grounds enough for him to "seem doomed" - he seems like he's about to lose. The fact that no source mentions him being hit by his own Lightning reduces your case down to pure assumption and arbitrary logic, not fact.
The smoldering part wasn't when Yoda was knocked out, it was after, and that was during with Tutaminis, IIRC. Suggesting that being burned into a smoldering huddle is akin to no-selling attack is outright preposterous, not to mention that you failed to respond to Yoda being half-stunned by the explosion at the end.
And your comparison between Palpatine's Lightning and a lightsaber doesn't work. Each bolt of Lightning is not necessarily more powerful than a lightsaber; it was the overall surge that was bending Mace's blade, and of course, the energy of lightsaber is much more concentrated than Palpatine's Lightning, which is spread out. Hence whilst overall potency of the Emperor's lightning might eclipse that of a lightsaber, its damage may not since its spread out over someone's body. Lightsabers could and would be able to end their lives or inflict bodily damage on Sidious or Yoda (DE/DR proves that); they would have to utilize active Force defences to counter that.
There's also TFU's ending, where Marek grabs Palpatine and the Emperor ends up shocking himself (with even more powerful Lightning than in RotS). Whilst he doesn't take permanent damage, he lets out a small wail of pain and his body is seen to be visibly convulsing. So while you could be right in that he could take his Lightning without any sustained physical harm, but that's a very distinct concept from being immune to his powers altogether.