Content is bling
People forget that while Android is currently a little lacking, the projection in the article is for 2012. So its got basically 3 years to improve and spread. Once you're got a large number of cheap mobiles running android, doing effectively the same as iPhone without the single manufacturer or lock in, then choosing Android will be pretty much a no brainer for most people. The original ibm pc didn't succeed because it was tided to a single manufacturer, it succeeded because of the open and cheap nature of the hardware (open and cheap). Once you subtract the iphone touch generation from the iphone stats, there really isn't much thats different (apart from image), and in may ways Android is certainly superior from a technical perspective (although that doesn't sell phones).
You can't compare this situation to linux v windows wars, which basically revolved around a large incumbent monopoly quashing anything seen as a threat, while providing financial incentives for people to NOT take up Linux.