Role Playing Game focuses on playing a role in whatever story there is to tell or experience.
Games like Final Fantasy, Fallout, Dragon Age, Mass Effect, and the like are all RPGs NOT because they have looting, leveling, item collecting, or anything like that, but because you play as a character (doesn't matter what kind) who is set out to play a role (doesn't matter what role) in a story (no matter how good or crappy, narrow or branched out).
All that other stuff included has little to nothing to do with playing a role in any story.
Heck GTA is more of an RPG despite its (Action-Adventure) labeling because its a heavily story based franchise, The action and adventuring parts are just GREAT addictional filler content to support the lengthening of the story.