His comparison to wii sports is crazy on so many levels.
Firstly he developed Lair. He has probably been playing the game every other day for the past 2 years. If he can only achieve 8/10 that is worrying. What does he expect people who have only been playing it a day or two to do?
I would bet the developers of wii sports can pull off backspin 10/10 or at least 9/10 times. Or at least could have after just having finished development.
Secondly backspin in wii sports is a skill, like in real tennis. Most people aren't going to get it right every time. Doing a 180 in Lair should not be a skill, it should be a basic command.
In wii sports tennis if you mess up a backspin shot then you will still hit the ball, maybe not how you wanted but you will at least hit it. Maybe you will lose a point because of it but hey it only takes 2 minutes to get back to where you are. If you mess up a 180 in Lair you could die and have to restart the mission. A pretty big difference.
Then of course the price difference between free and $60.