IIRC the promise of no/low damage was why Porsche went exclusive with whoever-it-was, which is why no other games could have a porsche, which is why they all had RUF instead (RUF upgrade more than 50% of the parts, which loopholes through the exclusivity or something). I'd have thought that was a shot in the foot though, as I hear kids who race game talking about RUF more than I hear them talking about Porsche.