What are the key differences between Audi's quattro system and other all-wheel drive systems?

I've heard that Audi's quattro system has some unique features compared to other all-wheel drive systems. Can someone explain what sets it apart?

Audi's quattro system is known for its mechanical center differential, which allows for a balanced distribution of power between the front and rear axles. This means better handling in all weather conditions and optimal performance on diverse terrain.

Unlike other all-wheel drive systems, Audi's quattro uses a predictive distribution system that anticipates when additional traction is needed and proactively transfers power to the wheels that need it most. This results in improved safety and handling without sacrificing fuel efficiency.