we made the new rebounding formula more a function of individual matchups, looking just at the team ratings is a bit crude. Look at who specifically got all the rebounds in those games and who they were boxing out against.
Look at two things, both the team overall rebounding rating, its not useless... but second order I would look at the opponents starting players and see who gets more rebounds, and assume that they are the stronger rebounders, and think about setting your lineup in a way to minimize that difference.