It’s because the US is the only country in the world that measures buildings by feet and not meters.
Supertalls are 300+ meters, that’s 984 feet, that’s the universally accepted threshold by almost every source and planning department.
https://en.m.wikipedia.org/wiki/Supertall_building
Houston has 2 supertalls, if counting antannas too then 3 supertalls. Which puts it just behind NYC and Chicago.
It doesn’t apply to us here in the US since we don’t have any but 600+ meters, or 1,969 feet, are considered megatalls.
https://en.m.wikipedia.org/wiki/List...ll_skyscrapers