I’m not really surprised by this, nor am I shocked that Android will keep its #1 status. I think a lot of it is how easy Windows Phone is to understand from the get go.
I got my sister to switch from her Blackberry, which she hated, to a Windows Phone. The first thing she did was call to let me know that she was able to synch her contacts without a problem, then proceeded to start sharing pictures and doing web searches. She’s now thinking of getting a Windows tablet.