They both also have a healthy but rarely appreciated sense of humor. They both like dressing up as their favorite characters, acquiring the best related merch available, overromanticizing the games/sequels of their youth, and shaming fans who aren't devoted enough.
They both love minutiae and stats-there's very little difference between knowing that Reggie Jackson and Paul Molitor are the only players to score ten runs in a single World Series and knowing that Boba Fett made his first appearance in The Star Wars Holiday Special. Fans of the Star Wars franchise aren’t all that different from obsessive sports fans.