Because being able to accelerate just the combined mass of the two vehicles faster than the other can accelerate its own mass alone would still be impressive when that other vehicle is a high performance one.
It doesn’t really matter if it’s impressive still or not. What matters is what they said and what the parameters of the test are. They said “while towing” not “laden with the weight of a porsche on a weightless trailer”. It’d be like winning the olympics on steroids. Impressive, since most people wouldn’t come close even while taking steroids. But still cheating.
Because being able to accelerate just the combined mass of the two vehicles faster than the other can accelerate its own mass alone would still be impressive when that other vehicle is a high performance one.
It doesn’t really matter if it’s impressive still or not. What matters is what they said and what the parameters of the test are. They said “while towing” not “laden with the weight of a porsche on a weightless trailer”. It’d be like winning the olympics on steroids. Impressive, since most people wouldn’t come close even while taking steroids. But still cheating.