With the PS4 selling 320k in Japan this week gone, it has overtaken WiiU (will likely be 100k ahead).
Managed to do it BEFORE March!
15th Feb:
WiiU: 5,720m
PS4: 5,390M
22nd Feb:
WiiU: 5,760m (with similar sales to the week before added)
PS4: 5,840m (with Japan launch and similar sales to the week before added)