The standard car was never going to be a poor performer relative to its PP cousin, so it'll be interesting to see how people justify PP either way based on a review that says it's good without it, but better with it!
Interestingly I spoke to a guy at a clients site I was at today, and he likes his cars. When I told him about the LSD being part of the PP, he said its a no-brainer. He swears by cars with LSD and wouldn't have one without now. He may not be representative of the car-buying public, but was interesting to hear his take on things.