You cannot answer the question as asked for the simple reason that flow rates are not static. They change with rpm and system restrictions. The rates are plotted on a curve and flow rates will vary all along the curve. Different engines seek highest flow rates at prescribed rpms and certain systems are designed for the highest efficiency.
Additionally, the person asking the question has a unique cooling system which may or may not have been modified to affect flow and so comparing it to another is rather unscientific.
Most people are simply asking us this question because they heard a sales person say our pump pumps "x" gallons per minute and they want to find a pump that pumps "x+1" gallon per minute.
To truly answer the question you have to test one pump against another pump in a controlled environment to get an unrestricted number. Then you need to put the pump on an engine in a controlled system and test the two pumps against each other again.
We did this with the goal of outperforming OEM and self professed performance pumps. When we make a design change, we test internally and, if warranted, test on dynamometers. Our goal it to achieve twice the flow rates at idle and maintain a 20% advantage along the curve. At rpms approaching 3,000 the flow rates are maximized in most systems and we see the ancillary benefits of higher system pressure.