We're talking EU Sidious now? Dude, EU Sidious strips the surface off of worlds, mindrapes m/billions and disintergrates matter without so much as a gesture. No elf can match him. He'd own them with a hard look.
Not when the elf tangles with enough demons that they could splinter an army of insanely powerful elves.
Slow, Eru is THE God in LOTR. He creates worlds. He creates gods. There is nothing that could possibly match him. He is all powerful. Sidious does not compare to him in any way whatsoever.
Still then. Sidious is multiple times faster than anyone in the LOTRverse. He could probably walk up and cut the guys head off more likely than not. Or just dominate his mind. Does this elf have a way to counter those tactics?
I will give you the TK. Though you must understand one thing: Feanor is the most powerful of the elves. Power in LOTR is very vague, in most cases. Therefore, please do not expect a complete refutal of anything. I can try
Also, I think we should move this to the LOTR forum, just to be safe.
Anyways, Feanor is very nimble. He is the most athletic elf of his time, and fought a dozen Balrogs, with them losing until one snuck up on him in the confusion. To do that requires inhuman speeds, that could possibly rival Sidious. Possibly. How many strikes before he could blink?
To wound a balrog, you have to hit it quite hard, implying inhuman strength as well.
And actually I believe Melkor attempted to influence Feanor's mind, and it didn't work at all. Now, I think Melkor, the Satan of LOTR, master of manipulation, yada yada yada, is better at dominating people than Sidious, especially considering how its all strength of will, and Melkor had the strongest. (Granted, he only failed because it was over the Silmarils, which Feanor would never give up)