I believe him, it's not a hard game once you are used to it.
It adds two difficulty settings, but no more things you have to do beyond the "helicopter" purple thing. (the forth stage at 80 points)
At 120 it makes the balance bar for the ball smaller and adds the amount of arrows coming at the blue line.
At 180 it slows the movement of everything so it makes it much harder to have a "close call". The helicopter goes much slower so you have to be paying attention other wise you will crash.