iOS outperforms Android by a wide 59 percent margin when every class of device is considered, comScore found Tuesday. In its first real study of mobile platforms beyond smartphones, the research team saw the iPad, iPhone, and iPod making up a combined 37.87 million devices in the US, or 16.2 percent share. Google's combined share represented just 23.76 million devices, or 10.2 percent of the mobile sphere.