I can't see it Crazzy. I'll go region by region:
Japan:
2008 - Sony sells less than 1 million PS3s in Japan.
2009 -
Jan-March
Sony can't prices because they just laid of 18,000 people in their current fiscal year and the company is pretty much guarenteed to lose money, so they can't lose more by selling more PS3s at a lower cost. January sales will be down at similar levels to December 08' vs. December 07' sales, now that White Knight Chronciles is out without picking PS3 above 50k for the week.
There are a few significant titles in here, but nothing to pick up sales like Gundam Musou in 2007
March
DS is probably going to get Dragon Quest IX at the end of the month. It has the most preorders of any game I've ever seen in Japan, and even though its not on Wii, the insurgency of RPG fans back to Nintendo platforms, with the realization that more Dragon Quest (DQVI & DQX) and Monster Hunter (MH3, MH port) should mean less gamers will buy a PS3.
April-June
Sony probably will drop the PS3 price cut in Japan here. That should push sales up to ~20k per week, depending on how the release schedule shapes up. At the same time, I figure Star Ocean 4 will release for Xbox 360 and cut a bit in PS3 sales here. Nintendo will probably have Wii Sports Resort or Punch Out ready to steal some thunder away too in this quarter.
July-September
PSP will probably get another revision, and DS will probably another wave of big titles. Wii will probably have a few significant (200k+) third party titles pop up here too (the 200k+ 3rd party games in Japan have been Tales, Deca Sporta, DQ Swords, RE: UC, DBZ: BT3...and Joysound and Taiko no Tatsujin will join this holiday in Japan...and then DQX, MH3, more Tales and whatever else comes around).
Oct-December
I'd imagine FFXIII releases late December for PS3 in Japan, and that something big for Wii/DS/PSP/360 pops up to counteract it (I'd guess a 360 price drop, a second New Super Mario Brothers on DS, a third party RPG for PSP, and maybe a promising new Nintendo IP on Wii - Cosmic Walker?)
If PS3 hits say, 4 million by the end of November, FFXIII should be able to debut to sales of like 1 million units in December, and push PS3 to maybe 200k in the first week of December, and end up insuring 1.25m PS3s sell in Dec 09/Jan 10. I'm not sure that PS3 can do that though without a price drop in Japan by June.
Its also entirely possible that Wii, PSP and DS will still top PS3 for the period, as DS I think should have two more big holidays in Japan after this one, and PSP has at least one more, and Wii is still 'young'.
2010
I'd imagine 2010 will look like a mix of 2008 and 2009. A price cut for PS3, but falling hardware sales. One last DS and PSP revision early in the year as those machines start to tinker out. Xbox 360 faltering.
Toward the end of the year I'd imagine a new Xbox, DS or PSP which means exclusive games will be tied up in supporting those systems and current generation machines will falter a bit as a result.
2011
One of the three machines listed will release in 2011, further cutting into the current generation content. I think PSP-2 will be roughly as powerful as PS3, cutting into the need for PS3 as the game library begins to blossom, while DS2 and Xbox 720 offer unique experiences as well. Wii-2 and PS4 (with some kind of non-graphical update but new capability) will probably be known entities at this point as well, so people will save up to buy them in 2012.
2012
PS4/Wii 2 launch, Xbox 720 gains popularity, DS2/PSP2 begin to peak, and as a result PS3/DS/PSP are all but dead while Wii is roughly where PS2 is today in Japan.
Summary:
PS3 06' - 500k
PS3 07' - 1250k
PS3 08' - 1000k
PS3 09' - 1750k
PS3 10' - 1200k
PS3 11' - 650k
PS3 12' - 150k
PS3 total sales in Japan - 6.5m
Americas:
Sony will probably drop price in April-September 2009. Microsoft will probably respond within a month or two. I suspect Microsoft can get away with a $50 price cut against a $100 PS3 price cut right now. If the Arcade is $150, the PS2 completely dries up in the Americas as a cash cow, and it becomes more difficult to drop the PS3 price again as development for PSP2 and PS4 begins with PSP past its peak and PS3 still borderline profitable or losing money.
At any rate, console prices are currently:
PS3 - $400
Xbox 360 - $200/$300/$400
I'd expect this by the middle of 2009
PS3 - $300
Xbox 360 - $150/$250/$350
Wii is still seeing some supply issues in the Americas, and should be able to do 10-14m in 2009, and I think 360 will only be down a bit if they drop price again. PS3 will probably outsell 360 slightly in the Americas for the year. Something like 13m Wii/5m PS3/4.5m Xbox 360 in 2009.
2010 should see a Wii price drop to $150 or $200, and sales will stay near 10m. I'd imagine PS3 will cost $250 while Xbox 360 will be $100/$200/$300. Could see two of the three new machines this Nov (DS2/PSP2/720) which would hurt PS3 as the 'top graphical' machine. So I'd go Wii 10m/3.5m PS3/3.5m Xbox 360
2011 gets the last of the DS2/PSP2/720 trio, and the new Nintendo/Sony console will be announced. PS3 will be $200, 360 $79/$129/$229 and Wii $150 but with an extra game. Probably 6.5m Wii/2.25m PS3/1.5m Xbox 360
2012 DS2/PSP2 are in full swing, 720 is gaining a foothold, and PS4/Wii2 release. The consoles reach their final prices - PS3 - $100, Xbox 360 - $49/$79/$129, Wii - $100 - with two games. Probably 3.25m Wii/1.35m PS3/500k Xbox 360
2012 Americas Summary:
Wii ~ 52.5m LTD Americas
360 ~ 25.5m LTD Americas
PS3 ~ 20m LTD Americas
Others:
2009:
Microsoft dropped price early and often in 2009...so I'd bet they won't in 2009. Sony will - probably in April since this is the region where they are closest to profiting with PS3.
PS3 sales were something like...3.5m/5.5m million in Others in 2007/2008. For 2009, I'd expect a rise to 7m on a big price cut. 2010 should see another rise - to 8m on another price cut. 2011 will be down, but not as much as the other regions due to the later launch, probably to 5.5m. I figure 2011 sees the PSP2/DS2/720 in Europe.
In 2012, the PS4/Wii 2 also launch, and that pushes PS3 down to 3m.
I figure Wii will do 13m/10m/7m/5m over the same time frame, while 360 will manage 5m/4m/2.5m/1.5m against the PS3 7m/8m/5.5m/3m.
Thats 32.5m PS3s LTD in Others at the end of 2012, 20m in the Americas, and 6.5m in Japan.