My understanding is that 2013+ SHOs have brake-based torque vectoring. When pushing the car through corners at higher speeds, it will apply some braking to the inside wheel to help eliminate understeer. It is further my understanding that the 2013+ models can send more torque to the rear than 2010-2012 models.
The Continental Dynamic Torque Vectoring is a bit different and works like the system in the Focus RS. It has clutch packs on each side of the RDU to distribute torque to the appropriate wheel (or both). This system is supposedly capable of sending up to 100% of torque to the rear and up to 100% of torque to either rear wheel.
The real purpose of all this was to make front wheel drive cars handle more like rear drive - eliminating the tendency to understeer. The benefit to us who like to drag race is better off the line traction. From my experience so far, I think it would take a hellacious amount of power to have a traction problem with my car.