there are no comparisin between the two. that is one thing xbox wins in hands down is the egronomical controler design. stick placement, motion, overal function, size..when I play plastation, I feel like a giant as the controller is so small.
no offence to playstation....it is a good system, but I agree with scott on the controllers.
if you can change it to use the xbox controller on the ps3 that would be the ticket.