I don't know if you guys have checked this but SurvivalCraft (minecraft clone), a game that began as a windows phone app is now second on the top paid itunes app store (as of posting). It's even taken over its intended clone in minecraft pocket edition. I think that it's worth noting that there are windows phone apps that apple users want too!
Apple - iTunes - Browse the top paid apps on the App Store
Apple - iTunes - Browse the top paid apps on the App Store