Based on the latest Famitsu hardware numbers...
PSP comparisons: After 204 weeks, PSP is where PS2 was at 151.7 weeks (January 24, 2003), where DS was at 91.3 weeks (August 29, 2006), and where GBA was at 134.6 weeks (October 16, 2003).
X360 comparisons: After 152 weeks, X360 is where GCN was at 14.9 weeks (December 22, 2001), where PS3 was at 18.0 weeks (March 11, 2007), and where Wii was at 3.9 weeks (December 24, 2006).
PS3 comparisons: After 104 weeks, PS3 is where PS2 was at 22.7 weeks (August 4, 2000), where PSP was at 54.0 weeks (December 18, 2005), where GCN was at 104.3 weeks (September 9, 2003), and where Wii was at 24.8 weeks (May 19, 2007).
So the PS3/GCN line has crossed yet again.
You'd be hard-pressed to notice from that image, though, so I'll zoom in on the last few weeks.
Wii comparisons: After 101 weeks, Wii is where GBA was at 90.6 weeks (December 12, 2002), where DS was at 70.9 weeks (April 8, 2006), where PS2 was at 99.8 weeks (January 25, 2002), and where PSP was at 155.4 weeks (November 28, 2007).
And now a new comparison. Some may remember when I used to compare DSL to GBASP. Now I can do something similar with DSi, but using tools developed since.
DSi comparisons: After 1 week, DSi is where GBASP was at 1.6 weeks (February 20, 2003), where GBM was at 1.4 weeks (September 21, 2005), and where DSL was at 2.1 weeks (March 13, 2006).
PSP-2000 and -3000 are excluded not because they wouldn't be interesting, but because they weren't reported separately.
Based on the latest Media Create hardware numbers...
DS vs PSP: Weekly shares of 72.1 / 27.9 bring total shares to 69.0 / 31.0. If DS stopped selling and PSP continued at this week's rate, it would catch up in 302.3 weeks (August 26, 2014).
X360 vs PS3: Weekly shares of 41.0 / 59.0 bring total shares to 23.7 / 76.3. If PS3 stopped selling and X360 continued at this week's rate, it would catch up in 129.8 weeks (May 7, 2011).
PS3 vs Wii: Weekly shares of 42.6 / 57.4 bring total shares to 25.7 / 74.3. If Wii stopped selling and PS3 continued at this week's rate, it would catch up in 247.9 weeks (August 11, 2013).
Week over week, there's no consistency on up/down. DS and PS3 are obvious downs from their previous bumps, though.
Famitsu Software Stuff
Rhythm Tengoku Gold passes 1 million.
Valkyrie Profile: The Accused One (3251) starts off with an almost identical first week to PSP's Lenneth (459), though Lenneth looks to have had more availability in its first week. Neither compares with PS2's VP2 (2451).
The new Wii Harvest Moon, Exciting Animal March (3260) has a weaker start than the previous, Tree of Peace (58).
The DS Culdcept is outperforming its PS2 and X360 predecessors.
Castlevania: Order of Ecclesia is an oddity among DS Castlevanias: it lasted more than one week in the Top 30! Though barely, as it was #30 itself.