Wii U hasn’t been lighting up the Japanese sales charts, but something about the system’s performance may surprise you. Through their first three weeks of availability, Nintendo’s console has actually outsold the PlayStation 4. Check out a comparison between the two below: Wii U Week Dates Sales Week 1 December 3-9, 2012 308,142 Week 2 December 10-16, 2012 126,916 Week...