An RPG (in videogames) would allow you to choose stats that affect your player's choices. If player input does not effect the story of the game, it is not a roleplaying game. A game with an abundance of quests but no choices involved with these quests, is not a role playing game. Ofcourse this means that 99 % of games called roleplaying games are not roleplaying games. But we are discussing RPGs on their terms. Although they are not fundamentally RPGs they are still fun, in a way. They are dungeon crawlers.