[cycleguy55]

Having one rear tire spinning madly while the other maintains directional stability will provide a 'safer' experience - arguably better for people less inclined to effectively moderate the 'loud pedal'.

Any kind of functional limited slip mechanism will be faster than an open differential in a straight line or road course at the hands (and feet) of someone who knows what they're doing behind the wheel. It could also be a disaster for someone who fails to exercise restraint and discovers how quickly the arse end wants to 'step out' through injudicious applications of throttle (on or off).