So says Gabe Newell, as part of a long and fascinating interview at Gamasutra about Valve's current state of play. Of their recent games' commercial success he claims that "We can never predict; I mean we just try to build good games and then we tend to be surprised. Portal 2 did better on the PC than it did on the consoles; Left 4 Dead did better on the consoles than it did on the PC."
He seems pretty philosophical about this: "We've never had a situation where we said, "We really, really want to build something that is more popular for the console guys. Because usually we have a bunch of other higher priority problems we want to solve. So we're glad that people want to play our games wherever they want to play."
I shall be less philosophical, and more crudely celebratory: hooray for PC games!