I agree with the poster above that stated that MS and Sony have different motives for releasing a NEO/Scorpio. IMHO, I think Sony was primarily looking at making NEO to not only provide a higher end model, but to usher in UHD Blu Ray. Sony is the only major 4k TV provider without an announced UHD Blu Ray player and looking at the history of Sony with PlayStation, they most likely were going to use the NEO as a Trojan Horse for UHD Blu Ray player. With AMD having better GPU tech, the most likely thought that offering a PS4 with improved gaming specs and a UHD player in one unit would be compelling.
I believe that is the motive behind Sony's thinking with the NEO. As a PS4 owner, I am totally fine with this and I would be there day one for it as well. It has enough extra GPU power to make a pretty significant difference in game performance.