A city bus (regardless of ICE vs EV) is limited in acceleration by what the manufacturer thinks people will tolerate (a city probably won't buy your bus if thei

A city bus (regardless of ICE vs EV) is limited in acceleration by what the manufacturer thinks people will tolerate (a city probably won't buy your bus if their limited trial results in people complaining about getting tossed around) so you get an electronic throttle with some fine tuning on top. Pretty much every modern vehicle has this. The EV manufacturer probably tunes their electronic nanny to give you more torque right away because "muh torque" is a selling point and they want the city reps taking a test ride on the bus to feel that.