Various actions and functions are more difficult to perform within the restrictions of a pad and so are removed, for example in dragon age on the PC, you can pause the game to issue commands to your party, if my house mates are to be believed, this function is missing on the console, because this reduces the "tactics" you can use the difficulty is also turned down so its not actually needed. They also tend to be less interested in platform and puzzle solving game-play then say, blowing shit up. Unless I missed the general genre demographic.
From a more technical standpoint, a lot of PC games either build their rigs themselves, had a hand in building it (IE picked hardware for someone else to build) or have a fair bit of knowhow in the software department, or any combination of the above. Console gamers buy a box, in the box is another shiny box, they plug it in and this magical tray comes out on which you put a shiny round thing. Tray thing then closes and it does what you want. End of user input in the setting up department.
From a more technical standpoint, a lot of PC games either build their rigs themselves, had a hand in building it (IE picked hardware for someone else to build) or have a fair bit of knowhow in the software department, or any combination of the above. Console gamers buy a box, in the box is another shiny box, they plug it in and this magical tray comes out on which you put a shiny round thing. Tray thing then closes and it does what you want. End of user input in the setting up department.