This is a curious point, especially considering the recent FB Android app revelations about lots and lots of things the phone was doing that nobody realised, things that cannot happen on iOS due to stricter privacy enforcement.
I suppose no month is complete without an iOS/Android flame war, but hopefully that won't happen here. For what it's worth, smart phones are all pretty darn awesome and if there is one key distinguishing factor that seems to persist across generations of devices, it's privacy and security, of which Apple is far different. If that doesn't matter to you, pick a year, any year, and you will find one or the other platform to offer features that the other lacks.