technically thats true, every game is a substitution for reality. Especially when it has a world you can traverse with a character. :P
So whether you like it or not.... you are playing a role in a virtual world set by the creator of that world! ROLEPLAYING!
Ofcourse people might deny this but technically its true! huh? IQ300! :P
Buuuuut the genre RPG has been painted as having emphasism on the roleplaying elements... so in reality not all games are considered rpg-games.
If the game is said to be an RPG then it frekking needs to be an RPG!