And those questions refer to their use of the Glock 22. If A=B, and B=C, then A=C. The OP on that thread made it sound as if its usage was a given, but the OP isn't Vickers. Then Vickers declined to comment. That's not a source IMO.
If you don't have the other comments and information, I could see how you might interpret it differently.
However, at M4Carbine.net, it was pretty much a "given" detail/variable. So A=C was in the word portion of the problem.
That is why the OP wrote it the way he did.