You're absolutely correct, but that doesn't mean that playing on a gamepad is difficult. Just that it perhaps doesn't provide you with the accuracy of a mouse,

You're absolutely correct, but that doesn't mean that playing on a gamepad is difficult. Just that it perhaps doesn't provide you with the accuracy of a mouse, that is why they add in mitigating features such as aim assist. In some areas its been a problem with PC players playing on a gamepad, to take advantage of high refresh rates and FPS in conjunction with aim assist. My point being that I have friends that have tried playing FPS games on a PC and have seriously struggled. Not because it's difficult but because it was new to them.