I think it really depends on the age, more like the way people see it.
For example, a 12 year old kid sees certain games as a estimulant, like a role model. They want to BE just like that certain super hero or even the villian in more specific cases.
A 21 year old views the game as a form is de-stress, which means he just wants to have fun and stop thinking of the problems' he's got in life.
so yeah if a certain hero does super violent things to those whom are seen as villians, sure the 12 year old kid might forge his personality based on that hero.