MK is much bigger.
MKwii brought MK to casuals, and they still want MK.
but cant stant the sales of wii cos of the instaled base.
But if you think, there were 7 mil MK in 20 mil GC. 1/3
there were 34 mil in 100 mil wii, 1/3
I spect the same for wii U.1/3 for the total wii U sales.