I thing that explaining why this game is not so good falls under the topic "Why this game is as good as it is". Because "as it is" might mean that it's not good. But you know, not a native English speaker here.
I grant that it’s not impossible to understand the title as talking about the factors driving the level of quality of the game, whatever that level is. But yes, that is not the natural interpretation for a native English speaker. Unless context suggests otherwise, there’s a clear implicature in the phrase “what makes this as good as it is” that it is good, or at least the factors that are being talked about are ones that are making it better than it would otherwise be.
