Meh, better put in a bit more.
GC is really easy to compare to Ps3. Why? Well, about equal 2006 (2001 for Cube) and late Europe launch (albeit 1.5 months later for GC).
So.
2001/2006 (year 0)
GC: 2405K
Ps3: 1367K
2002/2007 (year 1)
GC: 4964K
Ps3: 7921K
2003/2008 (year 2, but only up untill 1 week into December).
GC: 4406K
Ps3: 9026K
Normally I'd leave a comment, but I believe the numbers speak for themselves here.
http://www.vgchartz.com/games/userreviewdisp.php?id=261
That is VGChartz LONGEST review. And it's NOT Cute Kitten DS