As a matter of fact, the Ps3 has been tracking below GC in Japan for about 4/5 of the time (source; http://vgchartz.com/hwlaunch.php?cons1=GC®1=Japan&cons2=PS3®2=Japan&cons3=N64®3=Japan&weeks=86)
It isn't by a lot, and GC continued to fall, something I guess Ps3 won't, but I still believe it will have a hard time beating the N64.
Oh, and while this is a little off topic, I wouldn't say Ps3 is outselling Ps2 in Japan by much; http://vgchartz.com/hwlaunch.php?cons1=PS2®1=Europe&cons2=PS3®2=Europe&cons3=PS2®3=Europe&weeks=83&weekly=1)
http://www.vgchartz.com/games/userreviewdisp.php?id=261
That is VGChartz LONGEST review. And it's NOT Cute Kitten DS







