To refresh memories, the Gedanken Policy Test asks in respect to a given social policy: of two societies otherwise *exactly the same in every way,* which will prosper more along any relevant dimensions of prosperity (e.g., reproductive success, lethality, wealth, health, longevity, internal peace, what have you), and so prevail over the other: the one that adopts the policy, or the one that does not? The Test has given us quick and dispositive verdicts on a number of policies. Valorization of homosexuality fails the Test obviously, e.g.; so does toleration of cousin marriage.
Now, prima facie, the Test would seem to be utilitarian in character. It appears to evaluate policies as morally righteous if they are useful or benefit most people.
Utilitarianism is in bad odor around these parts, because, without the addition of some theoretical epicycles, it offers no way to rule out treating persons as means to ends (by, say, enslaving or sacrificing them, or forcing them to engage in gladiatorial sport). And that’s a monstrous evil thing to do (it also fails the Test). It suffers also from the fact that it begs the question: who defines benefit or utility?
The Test does indeed gauge results of policies, but does not presume to tell us whether or not they are morally righteous. Rather, it merely tests policies against reality; so, it is an instance of the experimental scientific method. Thus is it possible, e.g., that a society could decide, as ours so far seems to have done, to valorize homosexuality, as a policy so righteous as to be our duty, despite the obvious fact that valorization of homosexuality tends to demographic collapse. The moral evaluation of a policy does not then necessarily hang upon the outcome of the Test.
That said, it is truly amazing how consistently the findings of the Test agree with traditional Christian morality. Funny how that is: the very game theoretical mathematical structure of reality, which of course is at bottom the logic that drives the operation of the Test, lines up with the moral teaching of the religion of the culture that is so far the only one to have conquered the world.

