was that he was saying that present the lack of AV for Vista isn't a reason not to buy it.
In other words, (apparently) nobody has AV products for Vista yet. MS doesn't want people to wait for those products to be available before buying Vista (MS wants its money now), so he says, "Hey, it's good enough for my kid right now. Don't worry about it."
So, I think it's just convenient spin at the moment. Once MS's AV product for Vista is ready, you can bet the story will change.
My $0.02.
Cheers,
Scott.