So, the PS4 will outsell the WiiU in 3 weeks.

[Metrium]

A. The PS4 sales will slow down significantly (same goes for all consoles) due to the fact that this is not the holydays anymore.
B. WiiU will sell some units in the next 3weeks, can't expect it to sell alot but hopefully better sales year on year compared to last year.

So not in 3weeks. No way that Sony will sell 400k a week post holydays imo. I say 2months. So by the end of the fiscal year.