PS2 VS DS when will the DS catch the PS2 sales ?

[Nintendogamer]

I think DSi XL will give DS a early boost closer to PS2 sales, and if DS does very well this year I expect the DS to top PS2 Q4 2010. DS has already walked past PS2 in UK and in Austrlia like someone said, and will do soon in the USA too. DS will top about 145 MIllion before January 1st 2011.