Google's Nexus line of slates are easily outperforming it, but they've been on the market much longer, and it looks like Microsoft could overtake that subset of Android tablets, given time. The Nexus line, including the Nexus 7 ...
via http://techcrunch.com/2012/12/11/microsoft-surface-off-to-a-slow-start-in-tablet-web-traffic-share-but-could-catch-nexus-family-in-time/