It's like QWERTY vs Dvorak. The best one is the one you're used to. I personally find Windows and iOS frustrating, but I know it's because I'm used to Linux and Android.
google doesn't control for device screen sizes, software that other vendors load on, or the CPU/ram/storage on the phone, watch, or tablet. they also allow 3rd party app stores. this creates an experience that is out of google's control and in a lot of cases is sub optimal for the user. it's not as stream lined or polished as it could be.
Any example? I've been using both iOS and Android devices of all shapes and form factors since both launched (and I work at a mobile app editing co) and have no idea of the inconvenience for end users.
pagerduty on a nexus 5 brought the phone completely to it's knees due to low ram, and probably some amount of responsibility on the pagerduty app not doing something gracefully. this was the google flagship phone at the time, pals with the current iphone didin't have that problem so i switched.
