I think you're missing the point of the original post.
Let's assume that Sony is profitable with PSN for the moment, because that's where all the argumentation seems to be. If they are, then Microsoft is much, much more profitable -- both because they have more DLC on XBL than PSN has, but more improtant, because XBL generates 50$ a year from every gold customer.
If we assume everything else is equal (which again it probably isn't, as Microsoft has had the Video Store up and running for years, and considerably more DLC available to all users, but I'm trying to be as conservative as possible), and assumign a conservative estimate of 4 million gold subscribers, that's 200 million dollars a year in revenue that Sony has no comparison for.
It's like they're the same services... except Microsoft makes 200-300 million dollars more.