Credit goes to
NeogafBased on the latest Famitsu hardware numbers...
PSP comparisons: After 206 weeks, PSP is where PS2 was at 153.3 weeks (February 4, 2003), where DS was at 91.7 weeks (September 1, 2006), and where GBA was at 137.9 weeks (November 8, 2003).
X360 comparisons: After 154 weeks, X360 is where GCN was at 15.0 weeks (December 23, 2001), where PS3 was at 19.0 weeks (March 18, 2007), and where Wii was at 4.0 weeks (December 24, 2006).
PS3 comparisons: After 106 weeks, PS3 is where PS2 was at 23.6 weeks (August 10, 2000), where PSP was at 54.4 weeks (December 21, 2005), where GCN was at 107.7 weeks (October 3, 2003), and where Wii was at 25.6 weeks (May 24, 2007).
Wii comparisons: After 103 weeks, Wii is where GBA was at 90.9 weeks (December 14, 2002), where DS was at 71.2 weeks (April 10, 2006), where PS2 was at 100.5 weeks (January 31, 2002), and where PSP was at 156.2 weeks (December 3, 2007).
DSi comparisons: After 3 weeks, DSi is where GBASP was at 4.7 weeks (March 14, 2003), where GBM was at 11.8 weeks (December 2, 2005), and where DSL was at 3.7 weeks (March 24, 2006).
Based on the latest Media Create hardware numbers...
DS vs PSP: Weekly shares of 63.7 / 36.3 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 217.4 weeks (January 24, 2013).
X360 vs PS3: Weekly shares of 47.0 / 53.0 bring total shares to 24.0 / 76.0. If PS3 stopped selling and X360 continued at this week's rate, it would catch up in 107.8 weeks (December 18, 2010).
PS3 vs Wii: Weekly shares of 33.1 / 66.9 bring total shares to 25.8 / 74.2. If Wii stopped selling and PS3 continued at this week's rate, it would catch up in 262.5 weeks (December 5, 2013).