SquirTTboater

Torsen Quattro (found on all Quattros, too bad because Audi is actually not the manufacturer of Torsen) will split 50/50 unless there is slippage. In that case, up to 66% of the engine's power will be transferred to the wheel with the most grip, and the rest of the power distributed against the rest of the wheels. Meaning still AWD. Viscous coupling however transfers up to 95% of the power to the wheel with the most grip. Leaving a pesky little 5% to be distributed among the other wheels. Hardly AWD.
Nice Try.

CarTTman

.... must we bring this up again? It all depends on what you're using it for.