It's not 'trying to pretend it's a PC'. It's a device running the full version of Windows 10.There's no difference between a Surface 3, a Lenovo MIIX , an Intel Compute Stick and a Lenovo U530 Touch (for example) in that respect.
They're all capable of running the same version of Windows 10 and can all run Sky Go.
They're all capable of running the same version of Windows 10 and can all run Sky Go.