Here is what we have roughly (from NPD) for 2012 vs. 2013 in January to March, adjusting for the five week January in 2013 vs. the four week January in 2012.
13 weeks 14 weeks
Jan - Mar 12' Jan - Mar 13'
X360 1.07m 844k Down to 60k from 82k per week in Q1 2012
PS3 885k 662k Down to 47k frm 68k per week in Q1 2012
Wii 555k 306k Down to 22k from 43k per week in Q1 2012
Wii U 190k 14k per week, up from 0 in Q1 2012
DS 317k 261k Down to 19k from 24k per week in Q1 2012
3DS 670k 550k Down to 39k from 52k per week in Q1 2012
Vita 445k 105k Down to 8k per week from 89k per week in Q1 2012 (five week launch)
PSP 56k 27k Down to 2k per week from 4k per week in Q1 2012
X360 sold 5.36m in the US in 2012 - but is down 1/4 from last year to date. I think it ends up in 3.5m - 4.0m range - the X720 / PS4 launches are going to hurt over the holidays. PS3 sold 3.26m in 2012, it is down 30% on a weekly basis to date - so I think 2.0-2.5m is likely - again PS4 / X720 launches are going to hurt over the holidays. 3DS sold 3.7m in 2012 and is currently trending down by a quarter as well - so unlikely to top 4m. Wii U will probably sell 2-3m in 2013. Vita, Wii, PSP won't touch 4m...so to me, this looks like the first time in over a decade when at least one platform won't top 4m in the US. These are the 4m+ platfoms in prior years
2012 (X360)
2011 (X360, Wii, PS3, 3DS)
2010 (DS, Wii, X360, PS3)
2009 (DS, Wii, X360, PS3)
2008 (Wii, DS, X360)
2007 (DS, Wii, X360)
2006 (DS, PS2)
2005 (PS2, GBA)
2004 (GBA, PS2, Xbox)
2003 (GBA, PS2)
2002 (PS2, GBA)
2001 (PS2, GBA)
2000 (nothing - NPD never tracked GB / GBC though)
1999 (PS1, maybe GB)
1998 (PS1, N64, maybe GB)
1997 (PS1, N64, maybe GB)
1996 (maybe GB)
1995 (maybe GB)
1994 (maybe GB)
1993 (SNES, maybe GB)
1992 (SNES, GEN, maybe GB)
1991 (maybe GB)
1987-1990 (NES)
People are difficult to govern because they have too much knowledge.
When there are more laws, there are more criminals.
- Lao Tzu