That only affects playing music, doesn't help if your playing games
No it doesn't help with games and even so, you shouldn't have to mess with the EQ settings to get it to stop vibrating so badly. What they need to do is add some type of buffer between the screen and the rear of the device or God forbid thicken the thing up a tiny bit. Good luck with that these days!
The Air 3 wil quietly rectify this issue and a few others. No problem waiting. It's only eleven more months now.