Is that all?
I would have figured the figures would be a lot more skewed than that. The Wii is essentially gamecube 2.0 with a fancy controller, so unless they were really taking a beating on the Gamecube, $6 out of $250 seems a bit small.
And as for Microsoft, the only way the 360 hardware is not turning a loss is if those figures exclude the $1 billion that they have set aside for hardware faults. Then again, maybe they saved quite a bit of money by making the hardware defective in the first place...
For the record, I have a 360 and a Wii, hence why I will leave bagging out Sony to others.