What does starting early accomplish?
In Europe they'd have a shot at getting some of the 360 early adopters back who want the next new thing. I think a lot of them now went with PS4 and don't see the need to get the other console. I would go so far as to say launching with a healthy head start is the only way of getting market share back in continental Europe. If they launch directly against Playstation again with a similar console and Sony doesn't make grave mistakes, I don't see them gaining ground again.