That's like saying a Rolls Royce with chauffer is essentially the same as a town car. They both do the same job in the same amount of time, arguably both are a

That's like saying a Rolls Royce with chauffer is essentially the same as a town car. They both do the same job in the same amount of time, arguably both are as comfortable as each other (or near enough as makes no difference). The concorde has enormous brand appeal and exclusivity, and that matters to people.