An investigation of the latency of AirPods Pro against the Gen 1 and 2 AirPods.
They drop from 274ms to 178ms going from the first to second generation, and the AirPods Pro take it down even further, to 144ms.
The low latency of AirPods Pro is not something that gadget users compare against other Bluetooth headsets. Such “unseen” features are what distinguish Apple products from other brand products. It is hard to understand the kind of work go into lowering the latency, but it is easy to infer from the high latency of other Bluetooth headsets that such a feature requires a lot of research to implement.
The other Apple product that I remember which Apple makes effort to reduce the latency is the Apple Pencil.