In my kids last season of travel our manager did the opposite. We were a mid-bottom 18A team and she put us in a AA tournament. The team found out what she did the day before our 4+ hr drive to the tournament. If it weren't for our 2 goalies, we would have been blowout. The one goalie gave up 4 goals on 89 shots in 2 games (tied 2-2 & lost 2-1), and the other goalie gave up 7 goals on 76 shots in 2 games (lost 6-0 & won 6-1). Our team had 83 shots total in all 4 games (31 in our win). Our one win came against a team that is AA because their league didn't have an A division.
To me it's on tournaments to make fair brackets. It's not hard to figure out what teams are playing and what their MHR is to try and balance it out.