I wouldn't really call it a mouse, but it's a good idea to decouple the cursor on a touch-screen from the point of finger contact, for visibility reasons. Somehow, I don't seem to have this problem with the iPhone, it clicks the right links almost all the time, but it used to drive me nuts on Android. Maybe the screen is physically more precise on the iPhone, but this is definitely solving a pain point for Android devices. The gesture system is just the icing on the cake, it makes interaction so much smoother.