Silicon carbide and boron carbide are harder?

Silicon carbide and boron carbide are harder?
The main component of boron carbide is B4C, the content is between 95-97%, the Mohs hardness of boron carbide is 9.5
The main component of silicon carbide is SIC, the content is above 98.5, and the Mohs hardness of silicon carbide is 9.3
According to Mohs hardness, it can be judged that the hardness of boron carbide is greater than that of silicon carbide, which is why boron carbide is often used in bulletproof materials, which is due to the high hardness