Based on the latest Famitsu hardware numbers...
PSP comparisons: After 207 weeks, PSP is where PS2 was at 154.6 weeks (February 13, 2003), where DS was at 92.0 weeks (September 3, 2006), and where GBA was at 140.2 weeks (November 24, 2003).
X360 comparisons: After 155 weeks, X360 is where GCN was at 15.1 weeks (December 24, 2001), where PS3 was at 19.7 weeks (March 23, 2007), and where Wii was at 4.1 weeks (December 25, 2006).
PS3 comparisons: After 107 weeks, PS3 is where PS2 was at 23.9 weeks (August 12, 2000), where PSP was at 54.6 weeks (December 22, 2005), where GCN was at 109.3 weeks (October 14, 2003), and where Wii was at 25.9 weeks (May 26, 2007).
Wii comparisons: After 104 weeks, Wii is where GBA was at 91.0 weeks (December 15, 2002), where DS was at 71.4 weeks (April 12, 2006), where PS2 was at 101.0 weeks (February 3, 2002), and where PSP was at 156.6 weeks (December 6, 2007).
DSi comparisons: After 4 weeks, DSi is where GBASP was at 5.8 weeks (March 22, 2003), where GBM was at 23.6 weeks (February 23, 2006), and where DSL was at 4.4 weeks (March 29, 2006).
Based on the latest Media Create hardware numbers...
DS vs PSP: Weekly shares of 67.4 / 32.6 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 242.7 weeks (July 27, 2013).
X360 vs PS3: Weekly shares of 24.6 / 75.4 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 148.1 weeks (October 3, 2011).
PS3 vs Wii: Weekly shares of 41.2 / 58.8 bring total shares to 25.9 / 74.1. If Wii stopped selling and PS3 continued at this week's rate, it would catch up in 131.3 weeks (June 7, 2011).
Week over week, there's really no constant pattern to the changes. PS3 doubling is the biggest obvious difference this week.
Famitsu Software Stuff
Kirby Super Star Ultra Deluxe (3265) continues its double-weeking streak. Its first week was bigger than any other modern Kirby's two week total. Its two week total was bigger than any other modern Kirby's four week total. Its third week total is now bigger than any other modern Kirby's six week total. It's doubtful this can be maintained; it would need to sell 290K copies next week to match Squeak Squad's weeks 7 & 8.
Animal Crossing City Folk (3281) doesn't have quite the first week number of Wild World (95), but since it had fewer days on the market in its first week it may have been more successful for that smaller time period. In the case of this image it gives its line segment a slightly steeper appearance. Also worth noting that this is the third biggest first week for a Wii game, behind Super Smash Bros. Brawl and Mario Kart Wii.