I would replace Torchlight with Neverwinter Nights: Hordes of the Underdark, and Mount & Blade with Neverwinter Nights: Mask of the Betrayer. In my opinion, a RPG have to have choices in the story, and the player must be able to impact the story, and with that comes choosing dialogue options.
I haven't played Dark Souls, but I've asked a friend of mine, and he said that there isn't any actual choice in the story, so I would cross that out because it isn't a RPG in my eyes.
Also, I wouldn't add Mass Effect 2 or Mass Effect 3 to my list. Both these games are light RPG, at least ME 2, and in ME 3 you have the god awful writing, that ruins the game (I think most people know what I'm talking about).
The whole purpose of M&B is that you are impacting the entire world with absolutely every decision that you make.
Not to mention both it and Dark Souls do indeed have dialogue options although in some cases are limited.
Judging by what your friend said he hasn't played Dark Souls by the way.