The only geth that did nothing but stand still was the armature.
Yes, player skill is more than clicking on the screen. That's why I specified a kind of skill.
And yes, with auto-aim, you still had to aim. Moreover, you had to aim at things that weren't in your immedate field of vision. The view point of diablo (third person isometric) meant you had a much large field of view. Yes, something could run up to you quickly, but nothing could run from your field of vision and still attack you. Whether your hit connected or missed had far more to do with your attributes and stats than it did your ability to track something with your mouse on the screen.