yes and no. Different pump designs, oil viscosity, temp etc will dictate the flow rate at a given pressure...essentially it's the same principle as aftermarket turbo's, the airflow @6psi on a stock turbo can be totally different to the airflow @6psi on an aftermarket turbo
And just to add to the rest of the conversation, does an n1/oem oil pump operate at ~120psi (8bar) at redline?