30 to 45% more efficient they say. https://www.sae.org/news/2021/02/dana-twin-clutch-axle-boosts-ford-bronco-sport
(Heavier relatives: https://www.sae.org/publications/technical-papers/content/2020-01-1415/preview/)
(Heavier relatives: https://www.sae.org/publications/technical-papers/content/2020-01-1415/preview/)