Equally valid headline: "Windows Phone and Android are the only mobile operating systems with year over year growth" http://www.asymco.com/2012/08/15/american-exceptionalism/
Plus, you should never trust Aymco's data. The charts look pretty and as if "they make sense", but the truth is they are always misleading in some way, from what I've noticed, much like Net Marketshare's charts on mobile browsers' "market share", which show iOS at 50% or 60% and Android at 20%, even though there are now about 400 million devices for both Android and iOS, so about equal in market share.
Bada grew from 1.9 -> 2.7 percent in 1 year. Microsoft's total share (including the old windows mobile grew from 1.6 -> 2.7 percent in the same time. How's then Bada growing faster? http://techcrunch.com/2012/08/14/gartner-global-mobile-sales....