If you think Le Mans is not one of the most competitive and prestigious races in the world you are sorely mistaken. To say it is any more or less prestigious than winning Monaco is a purely subjective manner. The idea that the opinion of motorsport fans in the southern US has any weight is laughable. They are generally the most ignorant of other forms of motorsport and least well informed motorsport fans.
It is worth pointing out however that DHH does not compete at the highest level in Le Mans. He is one class below.