PS3 will fail miserably the comparison because of very poor results in Japan.
However if you look at it by region PS3 should easilly beat 2001 PS2 in Others, heck it's on track to beat PS2 2003 where the PS2 sold 7.7 million units in Others and which was the best year ever in Others for the PS2.
Right now the PS3 is tracking 500k ahead of the PS2 at the same time that year. Baring some unexpected results in the holydays you can already expect that the PS3 will sell at least 7 million units in Others this year, maybe 8 millions+