The thing is, that while the majority of the iPhone users use Windows on their day-to-day computers/laptops, the majority of the WP8.1 users user Windows too. Meaning it's the minority of iPhone owners who can use these features, while the majority of the WP8.1 users get to use their own.
Besides, Microsoft's integration is way deeper at the moment. Hell, even the custom accent colours are synced between computers and phones/tablets!
Actually the only thing I miss is from Skype - transferring calls. I am often on the way, always on Skype, and it's quite annoying when I have to interrupt a call, or even a group call, just to get on my computer. Now, if I could simply transfer the call between W8.1/WP8.1 devices, it would be awesome. Other than that, I'm happy with OneDrive, synced settings, etc.
iOS8 is a huge blow to Apple, by the way. They did exactly the opposite they were preaching so far (widgets are clutter, etc.), they realized they're late to the party, tried to catch up, and now everyone's laughing at them. Also, their new language? That jokingly absurd merge of Python and Javascript? C# XAML beats it any day. Hell even Qt with their QML-weirdo beat that PoS! Yes, better than Objective-C, but not better than current alternatives on the market.