$5
The PS2 controller is better when would you want to play with a controller that was not as good
Yes you can use a PS2 controller into a PC by buying a PS2 to USB connector. This is a connector that tricks the controller into thinking its a PS2.
It must actually be a PS2 controller for it to work
No,a PS2 controller will not work on your PC.
A Playstation controller will never work as good as a PS2 controller and you need to just buy a PS2 used controller for a few bucks
The PS3 controller does not work on the PS2 console
Your controller is probably broken, it should work. Make sure it's a PS2 controller with a PS2 console.
$25
I bought two Ps2 controllers at Game Stop for 10 bucks each!
The controller for the PS3 is different because it senses the movement of the controller and the PS2 controller does not.
Of course you could, the jack on both Sony PS1 and Sony PS2 are exactly the same, although it lowers the performance than if you were playing with a Sony PS2 controller which means that you can not actually use the controller because who wants a controller that does not work completely. Used PS2 controllers are cheap and there are no good reasons to try and use a PS1 controller on your PS2 because it will not preform like a PS2 controller