Google strategy is to focus on big data that is accurate and is delivered fast. Weather, the map is under of street under flyover or map of under water reef, google want it on its map. The strategy is not to detract apple users from apple products but let apple users use google products. So, in essence nexsus 7 device sold is not indicator of success its no. Of google apps used by any user. In a way goggle has its strategy clear.