Compared to China’s HSR or Japanese Shinkansen, it’s about 1/2 of their speed but compared to other countries without high speed rails including US, the speed is actually commendable as it’s the same speed as US highest speed trains.
In US, Brightline has a maximum speed of 200 kph, Amtrak Acela has a maximum speed of 250 kph.
The US high-speed train with the highest current top speed is the NextGen Acela, reaching 160 mph on Amtrak's Northeast Corridor. However, Brightline's upcoming high-speed rail line, Brightline West, will reach a higher top speed of 190 mph when it opens between Las Vegas and Los Angeles in 2028.
ETS trains can reach a record speed of 176 km/h but they usually run at 120 to 160 km/h.