If the hardware losses as implied are this low, then they must be losing money on something else. There are only 3 areas where they have big enough expenses to really lose all that money.
1. Advertising? They must be spending a lot here.
2. Game development? Face it, all HD publishers have been making losses and I doubt that Sony is any different.
3. Research and development? If they're spending heavily here, it means Console number 4 is inbound sooner than you think.
Tease.