If it's the rest of the Internet, then Google is better positioned.
What's striking to me is how much Facebook's approach is not "of" the Internet; Facebook is a site that takes the best of the Internet and places it within the borders of its own site. They've done a great job of that to date: my mum uses it every day and loves it.
Google appears much more inclined to believe it will grow as the Internet grows, and they are investing accordingly. True, they haven't hit many home runs outside of search, but they are willing to contribute to the web, which is the ultimate vendor-agnostic platform.
Google is investing in things it can't control. Facebook is investing only in things it can. I'm overgeneralizing of course, but over time I think Google's open nature wins because consumers eventually reject those companies who gain too much control.