Id would say that diffrence is very much a personal view. I dont have much trouble going from one "GUI"/control scheme to another one once I learn a system I am good with it.I have not played SH3 in some time but its control scheme was mine at the same time i feel fine with SH4s scheme once you get in your head how one goes its fine so long as the given games controls are set up in logocial fasion which I fell that they are in the case of SH3 and 4.