Apparently, the ill-informed gamers on the interweb have united to declare that the PS3 controller can do everything that the Wii controller can do. Xantar over at The Gaming Hobo sets the record straight on the difference between the Wii controller and the PS3 controller:
So to recap, the PS3 controller can’t simulate a knife cut in a kitchen. It can’t even do something as simple as picking up an object and then dropping it somewhere else. You might be able to do a punch with it, but the controller can’t tell precisely where you’ve punched. The Wii controller can basically simulate anything you are able to do with one hand including wielding weapons, grabbing and twisting doorknobs, picking up objects, pushing buttons, pulling a level, petting a dog and probably even writing on a chalkboard. The PS3 controller can do none of these things. The functionality of the two is barely even worth comparing.
The fact that the gaming media has utterly failed to explain this difference to the videogame audience is unsurprising but shameful.