Well Wii U marketshare will continue to diminish at a more rapid rate as Wii U sales slow down/PS4 sales continue. PS4 continues to gain marketshare over the Xbox 1 also as it outsells it weekly worldwide by a considerable margin. So by the time the NX comes out, the PS4 will probably have over 60% marketshare. I could very well see the PS4 maintain at least a 50% market share over Xbox 1 and NX considering the huge userbase advantage the PS4 will have over the NX when it comes out and the huge headstart/gap between PS4 and NX. It will be a challenge for the NX, not for the PS4 really. Or we might see the Xbox 1 losing the most marketshare whilst the NX gains. We shall see.