Its an impact rating, not a wind rating.

ASTM is the body that certifies hurricane rated windows. Wind is not in the equasion:

This specification covers exterior windows, glazed curtain walls, doors and impact protective systems used in buildings located in geographic regions that are prone to hurricanes. The test specimens shall be Fenestration assemblies, and impact protective systems; which shall be tested using the large missile test, and small missile test.

https://www.astm.org/e1996-20.html

Its an impact rating, not a wind rating.