You want my opinion here it is:
PS3: 1.01 million (PS3 should hit 1 million for the month of September, so instead of calling PS3 and Wii a tie I'm saying PS3 will beat the Wii, barely)
Wii: 1 million
X360: 500K
PS3:
Week1: 350K
Week2: 250K
Week3: 225K
Week4: 175K
^Not counting any big games thats coming out in September