Just because the examples look similar doesn't mean they are the same thing. For one, Android had a huge headstart before WP, the phone market itself is quite different from Desktop OS market, specifically compare to the time Windows cemented its dominance.

Other counter example includes iOS taking over BB and Nokia from behind, Android surpassing iOS (in terms of usage) coming from behind.

Mobile market and desktop market is not the same thing, so its a silly point to bring up.