The Xbox analogues are alot more rigid, there less sensitive to your touch i mean. i like to compare it to 1 of those crap ps3 rapid fire controllers you can get, if you have 1 then you know exactly what i mean about the analogue sticks.
the top xbox players play on sensitivity 4, on ps3 you get alot of players at 7+. If they had 7+ on xbox you'd be spinning all over the place.
i agree with the other poster, nice sig