What I've heard and also expericenced from friend's phones is that Windows devices come with better cameras. But that's almost the only I can say is better than other phones.
I agree with, well, everyone here with the fact that there are much more apps for Android and iOS than for Windows. I also find easier the home screen of Android - and the idea of being locked in menu as it feels like with Windows tiles makes me crazy (OK, I'm just too accustomed to Windows XP and 7 desktop, Android's home feels like that).
So, I prefer Android over all. I only have to blame Samsung (and sometimes Google) to install too many bloatware that makes many devices unusable by lack of memory space - note that a 4 GB device, from the cheapest ones, is no longer useful, you can't even have more than two, three apps, nor even talk about Facebook app that actually occupies 300 MB. But, if you choose a good hardware, it hasn't have to be expensive, and you first clean the phone (by deactivating those apps you'll ever even look 'em once) or install again the OS (i.e. using Cyanogenmod) your Android can be your most useful and powerful tool - and I really mean it, I develop web pages with a 2013 Android tablet.