Trying to predict the future of VR based on tech specs is kind of silly, because I feel the determinant of the timeline of its success is dependent upon what applications are built for it. All it will take is one or two well executed applications that require VR to be used, that motivates folks sufficiently to purchase hardware (a $99 mobile VR headset being a starting price point) that will bend the curve. But, obviously its hard to predict what these are, otherwise someone would have built it already.