Who said it is not possible? Let's say you like the Xbox 360 console, but I love the control of the PS3, with all that entails, how do you use in your Xbox? So far no solution, except for accessory XCM is manufacturing , based on your Xbox 360 Accessory PS3 .
It plugs into the controller port on your Xbox and the PS3 controller via USB to this accessory, around, you can just get to play with the PS3 controller without problems.
The downside is you will not have your sensor controls nor vibration, but at least addicts in command of the PS3 can use it.