To me America is loyal to the coolness factor, so whichever console is seen as the coolest has the best chance at leading the sales.
Interestingly there's no new gadget or HW feature to any of the nexgen consoles to give any of the consoles a coolness boost. Wii U's tablet controller is not that much different to an ordinary tablet. Kinect is a better version of what's on 360, so it's not new and exciting. PS4's DS4 with trackpad is nothing that hasn't been on laptops for over a decade.
Online features have mostly been done on current gen consoles and they're no better than what's available on PC.
So, what makes PS4 or Xb one the cooler console? We already know Wii U came last in a one console race in the coolness stakes.
“The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.” - Bertrand Russell
"When the power of love overcomes the love of power, the world will know peace."
Jimi Hendrix
