Bayern Munich is certainly the favorite, but Leipzig isn't a team to be trifled with. They could surprise them. Surprises can happen in Germany's opening matches. I hope we see one like this, because the competition always makes the league exciting.
The odd difference is extremely huge, Bayern are definitely going to win first fixture in the Bundesliga. Since both teams are still in the process of solidifying their squad, having both teams to score is kind of certain, but the end is favoring Bayern. Leipzig didn't perform too good last season, is too early for them to prepare the squad to compete against Bayern, the 10 odds given is fair for me.
The will probably win the first game, too bad that Bayern plays at home. I would have liked to see them play against RB Leipzig away from home, but it is as it is. Any surprise, like any loss of points for Bayern, would be a good wake up call for the whole league. Otherwise it is too boring. If Leipzig immediately gets a a bummer, the league feels not exciting from the first day.