The same can't be said about Windows Phones
If you look at the global marketshare, Android dominates iOS.
The point is that I can test on Windows without a Microsoft device or giving money to Microsoft to install Windows somewhere. I have no way to test anything on iOS or even Safari.
When I test my site in Safari in an iPhone and an iPad, I’m fairly sure it works on every other reasonably recent (think three years old or maybe even older) iPhone or iPad. Android? Well, there are so many browsers on so many different Android versions, am I supposed to own a fleet of devices, each with a fleet of browsers? (Plus the fact that I can’t really justify purchasing a flagship Android phone for testing, so I only have a crappy one and I hate every second with it; that’s more of a personal thing.) So in the end my attitude with testing on Android is don’t even bother.