That’s correct. From what I’ve read during my research on the over/under market, experts often say that the over is usually the public’s favorite pick. That’s why bookies tend to set the line in a way that makes the over look more attractive but in reality, it’s often a trap, and the game ends up going under.
It plays well with how the media always try to hype up a match to encourage more watchers. The governing body of any sport is always running a business and more exciting times in the sport means well in terms of profit. So, if they can generate more hype prior a match they will do so and this could alter bettor's perception of how the match will go.