Doubtful ... too short a window in my view, and it also depends on how much supply Sony can churn out, along with MS's supply. But assuming Sony will have a worldwide launch and MS will have supply constraints (giving some people a reason to pick up a PS4 instead), I do think it will make a strong case for the PS4 eclipsing the Wii U in 2014. Added to that, if Sony can give people consistent reasons to buy the system next year (ie software) it should also bode well for it.
Playstation = The Beast from the East
Sony + Nintendo = WIN! PS3 + PSV + PS4 + Wii U + 3DS