were GTA IV and MK Wii released in April?
Anyways, I expect at least 700k for the Wii. I have a feeling VGChartz undertracked on MK Wii Week. This is based on claims from ToysRus that they had more stock than ever before.
Well, I didn't know if it counted since the week ended after the month was over... I'm always confused when the month ends, then the week ends.