Based on the latest Famitsu numbers...
PSP comparisons: After 193 weeks, PSP is where PS2 was at 147.2 weeks (December 23, 2002), where DS was at 87.9 weeks (August 5, 2006), and where GBA was at 123.4 weeks (July 29, 2003).
PS3 comparisons: After 93 weeks, PS3 is where PS2 was at 20.8 weeks (July 21, 2000), where PSP was at 53.0 weeks (December 10, 2005), where GCN was at 99.3 weeks (August 4, 2003), and where Wii was at 22.9 weeks (May 5, 2007).
Wii comparisons: After 90 weeks, Wii is where GBA was at 88.7 weeks (November 28, 2002), where DS was at 69.6 weeks (March 29, 2006), where PS2 was at 96.9 weeks (January 5, 2002), and where PSP was at 151.2 weeks (October 29, 2007).
For a while now Wii will appear to get further behind GBA, since GBA is entering a holiday period. However, Wii is almost through PS2's biggest holiday period. If Wii has a weak next few months it might briefly fall behind PS2 before shooting ahead again due to its own holiday boost.
Famitsu software stuff:
Wario Land remains slow but steady.
Fatal Frame Wii (3062) remains well in the middle.
Rhythm Tengoku Gold continues to look ridiculous next to its predecessor.
Based on the latest Media Create numbers...
DS vs PSP: Weekly shares of 54.0 / 46.0 bring total shares to 69.5 / 30.5. If DS stopped selling and PSP continued at this week's rate, it would catch up in 273.5 weeks (November 21, 2013).
PS3 vs Wii: Weekly shares of 20.4 / 79.6 bring total shares to 25.5 / 74.5. If Wii stopped selling and PS3 continued at this week's rate, it would catch up in 484.5 weeks (December 7, 2017).
PS3 2008 falls back behind PS3 2007.