I think it depends on the condition of the pump the Autotech internals are fitted to. I had an old OEM pump which I fitted internals to, then swapped them to a new OEM pump. The difference between them was massive, the new pump found pressure much quicker than the old pump.
I then bought a low mileage APR pump which performed just as well, or maybe a fraction worse than the new pump fitted with the Autotech internals.