If the PS3 was dead in the water it wouldn't be selling and Sony would be giving up (like SEGA). The $399/€399 PS3 will have a BIG effect for the holidays and the £299 one PLUS a 60GB price drop here in the UK will also have big effects PLUS the great games that are coming out.
More to the point the PS3 winning isnt as unlikely as people think: if and i say "IF" the Wii is a fad and suddenly stops selling then in JPN all the sales will go to PS3 in EU/PAL most of the sales will go to the PS3 and in NA the sales will split between X360 and PS3 and this could still happen.
If MGS4,Killzone2,GTAIV,FFXIII,LBP,Wardevil,GT5 etc etc are all AAA titles(which they will be) and significantly boost hardware sales then it is also not impossible for the PS3 to come back and take No.1 its just very difficult for it but not impossible.
End of 2014 Hardware Predictions (03/03/14)
PlayStation 4: 12-15million
Xbox One: 7-10 million
Wii U: 8-9 million (Changed 01/04/2014 from 7-9 --> 8-9 million)