Only a couple of comments:
1) I believe the PS2 hardware drop could be significantly more than 15%, the current levels are more like 30% less than a year ago.
2) If the PS3 numbers increase a lot, the net loss per unit will come down as well since the fixed costs will be divided between more units. So, if Sony shipped for instance 13 million PS3 instead of the projected 10 million, the net loss won't increase 30%.
Those are the two things off the top of my head. I believe it is safe to assume that the PS3 "price reductions" are effective, it is already clearly past the launch period so Sony won't spend as much on marketing and probably there are not as much R&D costs to amortize.








