If even one succeeds, which is all but a certainty, it will change everything.
Before we begin, some definitions: medium-lift generally means a payload capacity of 2,000-20,000 kilograms (4,400-44,000 pounds) to low Earth orbit; heavy-lift, 20,000-50,000 kilograms (44,000 pounds-110,000 pounds); and super-heavy, which can haul over 50,000 kilograms.