No offence to anyone...
When I play a game, any game, I want to know that my score, achievements, etc are valid. That means I don't play stuff on "easy", I don't turn off tilts or make them less sensitive than they would be "normally", I don't change ball saver feature/timers from default, etc. I play games as the makers intended.
For example, on TZ, I quite often lose balls down the left off the pops. Frustrating, yes, but luck is a valid part of the game for me - even when it goes against you.
The only concession I'd be happy to make is where young children are playing.