Vastly better; writing matters.
So I urge you to listen to this, even if you don't watch it. It seems only available on the Broadway HD streaming channel, though Barton is listed as "Creator" of a rare audio-book adaptation of Le Morte d'Arthur around the same time, with actors including William Squire, Tony White, and Harry Andrews: Musical Heritage Society MHS 834985F.
One recommendation for viewers of the DVD set(s): The packaging suggests watching the books in production order; I'm watching them in the order the books were published, which entails watching this after the Edward Petherbridge _Strong Poison_. (Which I also recommend, despite the initial attempt at sensationalism in the screenplay. Petherbridge is obviously a more distinguished actor, though his characterization is darkermore lord and less whimsy, as one reviewer noted.)
But somehow the patented Sir Peter Hall magic makes you see why Wagner revered the Oresteia and Swinburne called it the greatest spiritual achievement of man.
One nice touch new in the screenplay is the newspaper in the opening scene.