Microsoft Says Console War Isn't Over Yet

This has been making headlines everywhere, so I figured I might as well put it up. In the often-silly console war, Microsoft's Shane Kim has declared that the first to 100 wins.
What happens to the Xbox 360 as a platform if it's only second place in America and not anywhere else?

Well, we've always known that we weren't going to win in Japan, right? And I think we can build a very good business, an exciting business with a pretty big installed base with success in places like North America and Europe. Even though you may not think it's big numbers, we're actually strong in Latin America as well. Canada's been a big market for us as well. So there are ways to get the scale. Now, if you don't get 10 million units in Japan, can you get to 100 million units overall? I'd love to get 90 million units and have that problem. That's what we're really trying to focus on. I think it's way too early to declare a winner. Some guys were trying to declare Nintendo the winner of this generation last night.

You don't think Nintendo's...

I think it's way too early.

When can we call it?

When somebody's well on their way to reaching 100 million units.
Maybe I'm just old-fashioned, but what's wrong with just waiting until the next generation and seeing which one sold most at the end?