There is still a pretty decent chance that the PS3 won't pass the Xbox 360 during their sales lifetimes. I always keep it in the back of my mind that Microsoft made it a stated goal to come out of this generation in second place, they said this way back in 2008. A lot can change in the next 2-6 months, at this point the question to me is whether Microsoft lets Sony pass them, not whether Sony will choose to take second place.
We shouldn't forget that the Xbox 360 will likely always remain cheaper to manufacture than the PS3 given the universal memory bus of generic GDDR3, use of DVD and the lack of a mandatory HDD. They have the option of cutting the price of either Kinect or the 360 or pushing out a further hardware revision such as one which uses cartridges and thus dispenses with the need for an optical drive.
Tease.
