MK8 Week: ~10k boost
SSBU Week: ~12k boost
So Golden Week/DQX 3.0/XCX Week for Wii U will have to go from something like 4-5k to 26-27k.
It will be close I guess, I'm also thinking Wii U can hit 20k that week.
Prediction: End of 2015 Hardware sales (as of January 20, 2015)
Wii U: 12.1M | XBO: 19.8M | PS4: 36.0M | 3DS: 58.5M | PSV: 11.7M