1. Google Now's way of anticipating my needs via the cards of different things. Siri does not provide this at all.
2. The way I can invoke Google Now by swiping from the bottom(at least in a Nexus device).
3. Current local temperature from the active weather app appears in the status bar. You can't get this on iOS unless jailbroken.
4. Background audio apps appear in the notification center with album art or podcast art and playback controls with navigation link as well as the ability to close them.
5. Notification center groups notifications unlike iOS.
6. Notification center can clear all notifications unlike iOS.
7. The ability to have app folders on the dock bar .
8. Widgets - doh!
9. Superior Google native apps.
10. Material Design. Just looks more professional and flowing then "cartoony" iOS.
11. Notification icons in the status bar. yeah this is actually quite helpful to me.
12. That apps are a separate list from the shortcuts. This allows for a freedom of customization that does not exist on iOS.(Windows Phone has this same ability).
13. The Settings app is better done.
14. Google Music actually provides me a real digital music locker.
15. Sound profiles!