Windows Phone owes the vast majority of its success to Nokia anyway, because most of the early adopters bought Nokia phones because of the hardware and despite Windows Phone, which is why Nokia has like 90 percent market share of the WP market.
If this wasn't the case, the market would've been more decentralized. You could also test the theory another way - if Nokia would've quit WP for Android this year (if Microsoft wouldn't have bought them), Windows Phone would be dead almost immediately.
Plus, Nokia's phones actually looked nicer with Meego:
http://www.blogcdn.com/www.engadget.com/media/2011/06/nokia-...
http://cdn.theunlockr.com/wp-content/uploads/2012/11/Android...