Sales of 64-65K are more realistic.
And according to Reggie, the 4x increase in HW was in the week after MK8 came out. That being, if in the week of MK8, Wii U sold 20K, the first week of June Wii U sold 80K. More than the whole month of May!
No wonder Reggie said to look out for June`s NPD.