Aaargh, I definitely wouldn't give preference to Windows over Android.

Especially in the mobile-phone space, iOS is getting destroyed by Android, and Windows is a non-entity there. Why develop an app for a small number of users, if there's an opportunity to develop it for
huge numbers of users first?
As to what Turtle91 says, I agree, but this presumes wide-spread adoption of Windows 8, which I don't currently see happening, and it's questionable if it's ever going to happen on tablets and mobile phones. Last time I checked, Windows had about 3% market share among mobile phones, while the leader Android had dozens of percent. As to desktop PCs and laptops, I predict Windows 8 will turn out to be as unpopular as Vista, but it's too early to tell today, and I may well be wrong.