REALZEUS:

I regard dry weight (perhaps with oil and cooling liquid added) as the real weight of the car. The arbitrary addition of fuel (how much and why that much and not more or less?), driver weight (how do they know how much I weigh?) and luggage (what the fuck???!!!) is laughable! A car weighs as much as it weighs! Whatever extra is up to the owner and you cannot make valid comparissons using curb weight!

The problem is that all Ferraris are always massively more heavy than you would think after reading about the dry weight. Ferrari has a tradition of understating weight figures.