1) The VGChartz figure for the PS2 is correct, the 145 million is inflated due to Sony's previous policy of tracking units produced as sold, ie those products for replacements under warranty count as a sold console.
2) The 3DS is not releasing outside of Japan this year
3) The DS will still be selling in 2012 when the world ends, with similar trends as the PS2 saw after the release of the Wii
4) The phrase "Even if the difference would stay that big every week until the end of the year" almost makes it sound like you believe the gap is likely to decrease. Remember, this is about the worst time of year for console sales. In november, where sales might be 5 times as high, if the relative sales of the two consoles were the same the weekly gap would be 900k)
