A number of people have mentioned/complained that the demo is too easy. "Hard" isn't really that hard, and it's not very difficult to keep the ball in play (i.e. few unforced errors).
No worries.
In addition to the demo being an early build (the game has since been tweaked) the demo has been dumbed down. Ronnie2K recently addressed this issue on Twitter (below).
In short, the full version of the game will present much more of a challenge.


If you'd like to follow Ronnie2K on Twitter: http://twitter.com/Ronnie2K