Andy serkins confirms Snoke is much darker and presumably more powerful than Sidious

Snoke is bloody dark; way darker than Palpatine. He's riddled with this osteoporosis so his body's twisted, like a corkscrew. He's incredibly damaged, so there's a bizarre vulnerability about him. Beneath that vulnerability, though, is this intense hatred.

how exactly do you become darker than Palpatine?

Palpatine is pretty dark, killing all the jedi and blowing up planets.

anyhow, given this

Snoke Kylo vs Sidious Dooku ESB

who wins?