The post from the lead programmer is such a non-response that it leans toward offensive. He's basically saying that it's not worth their time because (he perceives) that the Mac version will never even come close to PC performance. If they had built it from the ground up in-house (or outsourced it to a company that would do that) instead of using a WINE wrapper, this problem wouldn't exist.

He states that it uses OpenGL for rendering, then contradicts himself by stating they use a DirectX translation system. I don't think they should be focusing resources on bringing DirectX 11 features to a platform that can't run the normal game yet, and should instead focus on rewriting the game. If they continue with a non-native build of the game, there will never be a Mac machine ever that will run this game at a reasonable framerate. WINE wrappers don't scale.