How Does Audi's Quattro All-Wheel Drive System Differ From Other AWD Systems?

I've been researching AWD systems in sports cars and I keep hearing about Audi's Quattro system. What makes it stand out from other AWD systems?

The Quattro system uses a center differential to distribute power between the front and rear axles, allowing for a 40:60 front-to-rear torque split. This means that the majority of power is directed to the rear wheels, providing better handling and a more balanced feel.

Unlike other AWD systems that are primarily front-wheel biased, the Quattro system in the Audi R8 can send up to 70% of the power to the front wheels if needed. This provides better traction and stability in slippery conditions.

With the Quattro system, power is constantly and continuously distributed to all four wheels, instead of just engaging when the system detects slip. This results in better off-the-line acceleration and improved handling in corners.