(Sometimes it's good to also have a regular user's perspective on questions like these.)
Question: Why is someone who knows nothing about the game I am asking a question about telling me that my title and body do not go together?
Because the title and the body really may not go together. A user need not have any experience with a game to offer suggestions as to how to improve a question. A really good question should be clear enough, interesting enough, and make enough sense to attract readers who don't know anything about the system, and such a question should invite experienced players to offer answers to the question. A question that doesn't sync up with its title can backfire and fail to yield answers you want. (For example, this question originally had an awesome attention-grabbing title (if I do say so myself) but the top-scoring answer is absolutely not what I was looking for because that answer addresses that since-changed awesome title rather than the question.)
An unclear title leaves even those who could answer definitively, instead, guessing what you want.
Question: Wouldn't it make sense for someone with knowledge of the game, who can then make an educated decision on what does and doesn't go together, comment or edit it?
First, there's no way to judge a user's familiarity with a system unless the user states his degree of familiarity with the game system. Second, a user who's taken the time and trouble to try to help with your question now has a stake in a good answer to it—whatever those reasons may be—, even if the user lacks familiarity with the system.
The question, to some degree, is yours: You can accept or reject edits, edit it yourself, or do whatever with it. However, you can't mandate how other people interact with the question. Once it's out there where the community can get at it, it's only the question that's sort of under your control. Others have tried—and, mercifully, failed—to mandate who exactly can interact with their questions, and the site resists such attempts that mightily. It should: It's entirely possible that someone with no experience at all with a particular game system nonetheless possesses valuable insight.
Of course, bad edits from users that are unfamiliar with a game system should be rejected, but good edits from users that are unfamiliar with a game system shouldn't be rejected out of hand just because a user is unfamiliar with the system! Wrong information remains wrong information, but good writing also remains good writing.
(Also, bad answers from users that are unfamiliar with a game system tend to receive downvotes so such answers don't happen often, but good answers from users that are unfamiliar with a game system—while rare—can still be Useful or, at least, not Not Useful.)
Question: And if he felt it was more of a discussion topic then question, why didn't he just make it a wiki?
The Community Wiki label is applied on this site only in very rare cases and never to a conversation that's masquerading as a question. For example, I don't think I've ever applied the Community Wiki label to any of the 150-plus questions I've posed, and I think I've applied the label only once to one of my 1,100-plus answers (specifically, this answer). In the same vein, no moderator has applied the Community Wiki label to one of my questions or answers for me.
Rather than try to make the site behave in a way it's ill-equipped to behave, it's better either to rephrase the question so it can be answered or to have the conversation you want to have elsewhere, like a discussion forum.