How many RPGs get introduced with a “so if you lived in this world / were this character in a book, what would you do” language? Or with a “your job is to play and portray this character” stance that gives you a tool that has a pretty obvious set of applications? 

That language can, and often does, suggest a “see the world through the eyes of the character” stance, which leads to a certain natural set of assumptions about immersion. 

When you introduce newbs specifically to “tell a story, using this character as a focus” you get a different set of default responses. Or where you’re like “hey you can play this character or that one, or none at all and GM this session” gives yet another. 

All in my experience, right? Anecdotes and all that. Hundreds of anecdotes.