It doesn't really matter with the 360. Microsoft didn't go into the games division with the idea that each entry would exist in a vacuum. It was a long term investment strategy. Anyone claiming otherwise is trying to prove something by focusing on the smaller picture.
Microsoft spent millions on marketing, including buying one year exclusives. They spent massively to build the brand in Japan (that part was a failure). They were looking to purchase market share, basically, and it worked. I'm sure Microsoft is quite pleased with what they've done. The only real black mark is the billions lost over the RRoD.
Sony losses in this division are bit misleading, as they expected in profit from Blu-Ray in other areas. It was the gaming division that took the hit on paper, even though in reality the cost should be differed to the entire company.
