Who started play on keyboard - will always pro on keyboard. Who started play on joystick - will always pro on joystick.
And to be retrained it is not easy. For example, with the joystick on the keyboard and Vice versa. It is difficult to judge who is better. I saw very fast racers and someone been on joystick and someone on keyboard. To each his own.
I play on keyboard and have average skill, but when tried play on joystick... I was like noob xD