Weight or lack thereof is race car Nirvana.
On arrival at turn one, the driver of a light car can stay on the throttle longer before braking. And the driver can carry more speed into and through the corner because the car is not competing with the inertia of weight.
The magic of aerodynamic downforce cannot be ignored.
A car with wings will have more grip
and tune-able balance.
And then there is ground-effects for a white knuckle, 'shock and awe' experience.