Based on the latest Famitsu hardware numbers...
PSP comparisons: After 238 weeks, PSP is where PS2 was at 192.1 weeks (November 3, 2003), where DS was at 102.4 weeks (November 15, 2006), and where GBA was at 160.9 weeks (April 17, 2004).
X360 comparisons: After 186 weeks, X360 is where GCN was at 17.4 weeks (January 9, 2002), where PS3 was at 38.8 weeks (August 4, 2007), and where Wii was at 5.6 weeks (January 4, 2007).
PS3 comparisons: After 138 weeks, PS3 is where PS2 was at 46.3 weeks (January 16, 2001), where PSP was at 69.2 weeks (April 3, 2006), where GCN was at 127.8 weeks (February 20, 2004), and where Wii was at 35.9 weeks (August 4, 2007).
Wii comparisons: After 135 weeks, Wii is where GBA was at 99.3 weeks (February 11, 2003), where DS was at 77.3 weeks (May 23, 2006), where PS2 was at 117.0 weeks (May 26, 2002), and where PSP was at 168.1 weeks (February 25, 2008).
DSi comparisons: After 35 weeks, DSi is where GBASP was at 47.0 weeks (January 4, 2004) and where DSL was at 17.1 weeks (June 26, 2006).
Based on the latest Media Create hardware numbers...
DS vs PSP: Weekly shares of 62.3 / 37.7 bring total shares to 68.2 / 31.8. If DS stopped selling and PSP continued at this week's rate, it would catch up in 436.6 weeks (November 16, 2017).
X360 vs PS3: Weekly shares of 34.4 / 65.6 bring total shares to 24.8 / 75.2. If PS3 stopped selling and X360 continued at this week's rate, it would catch up in 367.4 weeks (July 20, 2016).
PS3 vs Wii: Weekly shares of 31.0 / 69.0 bring total shares to 28.4 / 71.6. If Wii stopped selling and PS3 continued at this week's rate, it would catch up in 437.9 weeks (November 26, 2017).
Week over week, everything is a little up except PS3.
Through the first twenty-seven weeks of the year, overall sales are down. However, the systems can be split into camps of 3 up and 3 down. Here's how the year-to-date year-over-year percents stand as of now.
Home hardware: -39.1%
Portable hardware: -24.6%
Sum of all hardware: -30.6%
Famitsu Software Stuff
Of course the big game of the week is Wii Sports Resort.
It (3615) has the biggest start of any "Wii" game yet. You can tell here that most of them had fewer days of availability on their first week, but the only one which is higher even through week two is Wii Fit (2674).
This also pushes the series as a whole past 10 million units.
BlazBlue did surprisingly well for a 2D fighter. It's something of a successor to Guilty Gear, and with combined PS3/X360 sales of 48K had a better first week than any Guilty Gear since 2002's PS2 Guilty Gear XX.
With so many new games this week, there was only one return from off the chart. Infinite Space went from being #1 to #39 back to #22. Bit of a supply situation there.
Famitsu Software Pie note: Thanks to Wii Sports, this is the first week that Wii has been the #1 software platform since Mario Kart Wii's second week back in April 2008.