Last week I bought my first iPhone, having been previously been only an Android user. The iOS gestures have this physicality to them; as described in TFA, it's clearly designed around a coherent metaphor for physical objects. In Android, gestures feel much more like easy-to-perform actions that have been mapped directly onto actions from desktop computers.

I'm not sure which I prefer yet, but I definitely know which is more comfortable, intuitive and premium-feeling to most users.