Well, according to Ethomaz the PS4 will have reached 7 million sold by end of March 2014, and Seece seems to believe Xbone will soon be struggling down there together with Wii U for 500K quarterly sales so going by that the Xbone will only have reached roughly 3.5 million by end of March.
That's 7 million versus 3.5 million, you do the math.







