Let me reword this. I can either buy Crysis for my 360, or my PC. Benefits of PC are: better graphics, and I can either play it at my desk with keyboard and mouse, or I can run it to my tv and play with a controller. My question is this:
If the PC version of the game is balanced to be more difficult, because of the better precision of keyboard/mouse, then would I be handicapping myself by trying to play the PC version with a gamepad? If I really would rather play on my couch, then maybe the 360 version would be better.
Ultimately I'm trying to find out if it's common for shooters to be balanced differently for PC and console, as this is common with other genres. For instance, Dragon Age: Origins, is significantly more difficult on PC than console.
I use an Xbox 360 wired controller and it works automatically for most games (specifically games that are on 360 and pc) without having to configure it. You can switch between the gamepad and the keyboard w/o going into the settings, they both work at the same time.
If you have a game that isn't compatible with the 360 controller in that way it'll most likely be easy to configure. If it isn't, you can use Joy2Key or Xpadder to map the keys.
Also, the desk vs tv thing doesn't make any sense. Hooking up your tv to your computer is as easy as hooking up the 360 to the tv. Just plug it in. I use a 40" "tv" for my computer regularly.