"the game in many businesses is sold out already to 50 percent"
Being that this is not a native english sentence I could be wrong but I suspect this means "The game has sold up to 50% of its shipped units in many stores" which would imply that it was probably quite a bit below 50% (as a guess probably closer to 125k).
Anyways, its a good number but I'm far more interested in the hardware numbers for the Week.