Having had to troubleshoot many hydraulic problems over the years, flow by itself won't do any work. It is the ability to make flow under pressure that does the work. I have tested many hydraulic pumps with a flowmeter that would make the recommended flow with no pressure, but as soon as you introduce a restriction, that flow it would drop to nothing. Most pumps are rated with a static flow at a given RPM and are expected to still flow at least 80% of that, up to the system relief pressure. Which also shows that pressure alone won't do any work, considering with the same flowmeter I can stop the flow and still have pressure.
Brian