That is pretty slow. From what i see, even though all chinese machines uses same mainboard there are some other factors for a machine to be go fast.
Chasis is very important. If quality is bad there, there will be more rattle and that effects prints at fast speeds. I saw too many printers. For example the older one of what i have was printing a bit off after 50 cm. And this was obvious at fast speeds. They have fixed that with new chasis. I guess that was CR motor not being able to catch up the speed it needed.
Also manufacturer gave us a few newer mainboard software version, because at first printer would print grainy when we were trying to use it fast. They fixed this with software.
Production quality is very important. Support is also important. So even they all are basicly same printers, small things make huge diffirence. All needs to be perfect to use machine at its highest capacity. And this speed is absolute max speed for i3200, because faster than this would not give correct colors because printheads cant put out enough ink at faster speeds.