The other big problem is that a player isn’t always choosing to do one thing over the other; not all games are created equally, so a comparison can be pointless. It takes three hours to get through Gone Home, yet that game made a few people’s lists because those three hours are super duper memorable and affecting. Three hours into Fallout 4 is not even enough time to have some of the core mechanics revealed to the player.
But that’s okay, because they’re different types of game. If you were drawing a comparison only between genres, or within an identical genre, you could perhaps make the argument about stated versus revealed preference. Gaming, fortunately, is a lot broader than that.