Nowt except the difficulty of the races and handling of the car and controlsDoes the difficulty setting you choose at the start really affect anything? Just that I selected a difficulty level, but wanted an automatic car and as soon as i changed the gearbox to automatic, it came up with "custom" instead of "difficult" etc. If one player was to select easy at the start, and another selected difficult, but both altered their game assists so they matched, would the game be harder for the one who selected difficult?