You’re comparing the world’s first fully reusable rocket that also happens to be the world’s most powerful operational rocket to old technology? The payload capacity of this vehicle is immense. There is not a single aspect of it that isn’t brand new, from its proportions, engine power cycle, engine amount, construction materials, you can go on almost endlessly.
These incremental tests are what allow them to move at this incredible speed. Traditional rocket development doesn’t take years, it takes decades. You have to consider that this isn’t a government trying to outcompete another one, it’s a private company. They are pushing the envelope with everything they’re doing.