After playing twice on the xbox, once on the PC with mouse controls, and starting again on the PC with a gamepad...
The PC mouse controls are a joke. The game is pathetically easy compared to its gamepad counterparts. Any every action is mapped to the arrow keys, so there is no quick second of hesitation of what button it could be during action sequences... kind of takes all the tension/difficulty out of the game. Something like JPTG wasn't meant for a keyboard, at least not the QTEs. I also felt like the scenes where you were looking around felt much more natural using a controller to look around the scene, as opposed to a mouse. Same with dialogue and switching areas, its pretty clear the game is tailored to a gamepad.
That being said, the PC game does have superior graphics to the Xbox, which is why I'm playing it again on the PC!