@LordHaseo
I got the whole tutaminus thing from Jensari 1 on Youtube. Nevertheless, Vader could just absorb it using his lightsaber or could continuously disrupt Sidous’s concentration by using telekinesis thusly preventing him from using force lightning.
Jensari, EvanNova and the rest of them only say that Vader could absorb or redirect blaster bolts. If Vader could just absorb Force Lightning so many people wouldn’t see his suit as so debilitating. Vader can only use his Saber for so long before Sidious disarms him.
@Ender
The Emperor had more midichlorians in his right pinky than Vader had in whatever was left of his body. Bringing up Palatine’s left pinky would just be unfair.