Its not done for, it was doing great all year until the pricecut last month. the effects of the pricecut should last until LBP comes out and Ps3 will regain ground but then will lose it when Gears of war 2 comes out, but eventually will take it back. Tug-o-war.
I don't like comparing overall if its second or third because the Xbox 360 got a full year head start..... In reality, PS3 is in second place if you were to compare them in their second year sales. Its just not right to say.... Xbox 360 is winning this gen for HD consoles, what happens if PS3 and 360 came out same time? then we would have a whole different scenario.
Xbox 360 second year: 13.619,788
PS3 second year: 15,771,413 (not even done with its second year, still have one month left)