Take it from a guy who has actually played it with a controller. I played LoL with a xbox 360 usb controller. its nearly impossibly to get it right. I had figured that this wud be fun cuz i could map the spells to the buttons but the pointer movement is so not cool. I tried higher sensitivity and the pinter was running all over the place, so brought it low so i cud aim with precision but then turning an attack into a retreat took a LOT of time. It was just a crazy experience. Maybe we could get better at it over time but i dont see why anyone would sacrifice their mouse advantage to play on a controller? it would be a huge disadvantage in a competitive game.