^You're totally forgetting DC-X
and about 3 other companies that have been building propulsive landing rockets for about the last 10 years. Now, when and if they get it into service, THAT will be a first, if one of the other companies don't beat them to it.
As for the Superdraco having enough thrust to land on the moon, you do remember it's designed to land the dragon capsule on earth right? Earth having higher gravity?