Latency is misunderstood in blockchain.

System response is meaningful - but that’s “intrinsic latency” meaning the delay internal to the system. E.g. from the moment you get a tx to the leader how long until it’s confirmed by the network or sequencer?

“Extrinsic latency” is about how long it takes data to get to the leader — on average — which is extremely importation. A single sequence will always have bad extrinsic latency because it only exists at one point on earth

A perfectly evenly districted POS network (population weighted) is the best you can do on a single block producer for extrinsic latency

Multiple concurrent leaders can shorten this even more.