Interesting webOS is left off the the chart entirely despite the support of HP while magically the support of Nokia is enough to catapult Windows ahead of everyone.
If webOS and Windows are going to beat Android they're going to have to do something different than they are doing now.
HP just isn't competing with Apple on hardware. It needs to kick up its efforts by an order of magnitude if it wants to actually win with a limited lineup.
HP probably needs to go with more of an Android approach that seems to be winning against Apple anyway. If HP isn't going to license webOS out it needs to pick up the slack itself with a wide variety of form factors.
As for Microsoft it is a tough call. It has a better user experience than Android. And it is a lot more 'open' than webOS or iOS. But is that enough to actually win? Tough to say, especially when Google should make dramatic user experience improvements with Ice Cream Sandwich, the first handheld version of Android developed completely under Matias Duarte.[1]
[1] https://secure.wikimedia.org/wikipedia/en/wiki/Matias_Duarte