Pro football players and pro esport players of course, have superior cognitive abilities, which is what helps them outstand in split-second decisions that win them games.
People who scream at those players and fight other people in the street because they wear a different team shirt in average will be less interested on reading books or playing deep games than people who are subscribed to science channels.
Now, John the hooligan, may be a bookstore clerk that loves cultivating his mind after a good post-match brawl, while Ned the Nerd might prefer to browse porn when he's done with his chess games, but we're talking about averages, and also not about how intelligent each person is, only about their interests and what they want from life. I'm pretty sure there are plenty of studies that relate, not so sure one specific about RPGs (ie, games with deep thought, complicated systems, and lots of reading) vs sport games (ie, gather with friends, square to shoot, circle to pass, have fun in an easy, non-engaging way), but both you and me know this is how it is.
