The issue with this sort of logic "A isn't closed so B shouldn't be," is that it assumes there is a reason A isn't closed. It suffers from the assumption that A has been left open on purpose and not because of neglect.
That said, the former question asks for people to decide what "runs well" means, where as the latter is requesting the required system specs.
Now I can see how you would think that these two are related based on the phrasing and the presence of "Bad Answers™" in the latter question (even my own answer is terrible). In fact, the only right answer to the latter question is Kevin Y's which lists the manufacturers specifications. All other answers are little more that supposition.
In effect, there is only one correct answer to the latter question (not a list of possible answers), where as the former would be a list of games (possibly infinite in length).
You have to realize the reason the Starcraft question was never cleaned up (and probably would get closed today) is that it was asked before the community really understood this difference. Its largely been left alone because of neglect.