Based on the latest Famitsu hardware numbers...
PSP comparisons: After 232 weeks, PSP is where PS2 was at 185.9 weeks (September 21, 2003), where DS was at 101.1 weeks (November 6, 2006), and where GBA was at 157.3 weeks (March 23, 2004).
X360 comparisons: After 180 weeks, X360 is where GCN was at 16.9 weeks (January 5, 2002), where PS3 was at 37.6 weeks (July 26, 2007), and where Wii was at 5.4 weeks (January 3, 2007).
PS3 comparisons: After 132 weeks, PS3 is where PS2 was at 44.8 weeks (January 5, 2001), where PSP was at 67.7 weeks (March 24, 2006), where GCN was at 122.7 weeks (January 16, 2004), and where Wii was at 35.0 weeks (July 29, 2007).
Wii comparisons: After 129 weeks, Wii is where GBA was at 97.1 weeks (January 26, 2003), where DS was at 76.9 weeks (May 20, 2006), where PS2 was at 115.5 weeks (May 15, 2002), and where PSP was at 166.3 weeks (February 12, 2008).
DSi comparisons: After 29 weeks, DSi is where GBASP was at 45.7 weeks (December 26, 2003) and where DSL was at 15.6 weeks (June 15, 2006).
Based on the latest Media Create hardware numbers...
DS vs PSP: Weekly shares of 58.9 / 41.1 bring total shares to 68.3 / 31.7. If DS stopped selling and PSP continued at this week's rate, it would catch up in 516.1 weeks (April 15, 2019).
X360 vs PS3: Weekly shares of 26.1 / 73.9 bring total shares to 24.5 / 75.5. If PS3 stopped selling and X360 continued at this week's rate, it would catch up in 553.0 weeks (December 29, 2019).
PS3 vs Wii: Weekly shares of 40.2 / 59.8 bring total shares to 28.3 / 71.7. If Wii stopped selling and PS3 continued at this week's rate, it would catch up in 443.5 weeks (November 23, 2017).
Week over week, things are pretty flat.
Through the first twenty-one weeks of the year, almost everything is down by some degree. Here's how the year-to-date year-over-year percents stand as of now.
Home hardware: -36.8%
Portable hardware: -25.1%
Sum of all hardware: -29.8%
Wii passes 8 million after 130 weeks.
Famitsu Software Stuff
RETURN OF THE EVERGREENS. New software isn't exactly lighting up the charts, so this chart is full of oldies. Some of them are always on the list, some come and go, but a few of these haven't been seen in a Top 30 for months. This week's list includes:
2005's Animal Crossing: Wild World (at 4,998,531)
2005's Mario Kart DS (first time since January)
2006's New Super Mario Bros.
2006's Wii Sports (first time since February)
2007's Wii Fit
2008's Monster Hunter Portable 2 G
2008's Mario Kart Wii
2008's Rhythm Tengoku Gold
2008's Pokémon Platinum
2008's Little Magician's Magic Adventure
2008's Animal Crossing: City Folk
2008's Taiko no Tatsujin Wii
The Bleach: Heat the Soul series has never been one of PSP's top sellers, but it has been prolific and pretty steady. Heat the Soul 6 (3521) looks to have the best first week in the series at 41K, but they've almost all started in the 35-40K range so it's not by much.