The Dovakin's massive amounts of health, stamina, and magical powers sort of destroy the Chosen Undead. Dark Souls is about a character who repeatedly dies as they face gods while Skyrim is about a human-god killing everything (obviously both are about way more).
The Dragon Born is just too powerful, especially in the DS universe. I think that's what makes Dark Souls special though. You're not insanely overpowered.