@DekuNut I don't want to put words into his mouth, but I imagine my feelings on this point aren't a million miles away from
@Castle's.
Western RPGs are very heavily focused on the idea of character creation and development through story. The player will have a hand in what the main character looks like, their name, their background, and their skill set. In most, the player gets to decide what motivates the character and has the freedom to interact with other characters according to a player-assigned personality. The player gets to decide
who the main character is, how they became that person, what they choose to do in the world the inhabit, and how that will affect and change them.
Most Japanese RPGs feature a predetermined character. Some will give the player the ability to alter how that character looks, but they will almost always have a name, a personality, a linear story, and all of their choices will be dictated by the plot and not by the player themselves. The player will mainly have influence over the main character's skill set, but outside of that JRPGs don't give players the freedom to create their own characters and inhabit them.
I don't say any of this to imply JRPGs are bad, just that they differ in the most fundamental aspect of what I feel an RPG actually is, what specifically makes RPGs distinct from other games: the ability to create a fictional character of my own and live a life as them, from major narrative choices right down to how I talk to people. JRPGs don't offer that. If I have to play as Rex, the happy-go-lucky dragonrider, or I have to play as Takeshi, the brooding war veteran, then I'm not role playing. You may as well say Gears of War is an RPG because you 'play the role' of Marcus Fenix. JRPGs are more similar to third-person action games than to RPGs, since they offer so little room to actually role play.