the only thing I will say, especially about the camera, is that it's less about the quality of the camera and more about the software. the iOS camera app is, frankly, fantastic. It may not have the most options, it may not look the best, etc. But the simple fact is the time from pocket to picture on iOS is still better than anything on Android, and that is to many people the most important aspect of a camera on a phone. And add in that to this point, in 99% of cases the "I just want to press this button and get a picture" image is better than on android. Sure on most new high end android phones you *can* get a picture that matches an iPhone, but it can take more effort.
iOS has the best camera on the market because the entire overall experience, from the app to the image quality to the simplicity of it, has been better than android. I can't wait to see if the 6P comes close to matching it.
Having a good camera experience is about more than just raw image quality, and up to this point Apple's has generally still been better.