PS3 can still finish in first place. The console wars are live and kicking. Wii peaked in 2008 with 25 million console sales. PS3 sales are rising and rising every year. PS3 will pass the 360 in 2011. PS3 moves to second place and starts chasing down the "invincible" sales leader.
PS3 started slower but was at a much higher price than the Wii. Almost 4 years after the launches the Wii is on 75 million and the PS3 just over 40 million sales.
Wii sales started fast and well peaked in second year 2008 with 25 million sales. The sales of the Wii are expected to trend downwards over time. 2009 (20 million sales) was a 20% decline on 2008 sales. 2010 sales should be another 15% to 20% decline on 2009 sales: 16 to 17 million Wii console sales for 2010.
PS3 may even claw back the sales gap on the Wii as its big games and price cuts help boost PS3 sales. PS3 in the next 5 or 6 years may well outsell the Wii by 30 to 40 million console units. Time will reveal all.
PS3 can possibly make the biggest come back in console wars history. 2016 may well see the PS3 over take the Wii in total console sales. The chances are very slim but the PS3 has a chance of re-writing history.