Easy.
For Wii to reach 50% it need to sell every week same as ps3+x360 + gain 6 mln. advantage in next 30-40 weeks.
Because,
ps3+x360 = 30,17 mln.
wii = 24,19 mln.
6 mln. in 30 weeks = +200k per week for ps3+x360 numbers.
At current rate, this is impossible for Wii.
After GTA4 and MGS4 releases i believe it will even fail to = x360+ps3 numbers and lose any chance to get closer to 50%.
Now, with ps3.
It has to sell over 25% per week from whole ps3+x360+wii.
And usually ps3 achieve this number. =)
After GTA4 and MGS4 releases PS3 has good chance to reach 25%, especially during summer time, since MGS4 will be the Only BIG game.
Every 5 seconds on earth one child dies from hunger...
2009.04.30 - PS3 will OUTSELL x360 atleast by the middle of 2010. Japan+Europe > NA.
Gran Turismo 3 - 1,06 mln. in 3 weeks with around 4 mln. PS2 on the launch.
Gran Turismo 4 - 1,16 mln. with 18 mln. PS2 on the launch.
Final Fantasy X - around 2 mln. with 5 mln. PS2 on the launch.
Final Fantasy X-2 - 2.4 mln. with 12 mln. PS2 on the launch.
1.8 mln. PS3 today(2008.01.17) in Japan. Now(2009.04.30) 3.16 mln. PS3 were sold in Japan.
PS3 will reach 4 mln. in Japan by the end of 2009 with average weekly sales 25k.
PS3 may reach 5 mln. in Japan by the end of 2009 with average weekly sales 50k.
PS2 2001 vs PS3 2008 sales numbers =) + New games released in Japan by 2009 that passed 100k so far
