Draw is by far best for us, then
Perth winning, then
Brisbane winning is the worst.
Edit - One advantage of Perth winning, as someone else said above, is that it keeps WSW very narrowly alive which gives them more motivation against Adelaide tomorrow. So it might be nearly as good as a draw, although it does mean Perth would only have to beat Newcastle in the last match to finish above us even if we beat MAC.
Perth winning, then
Brisbane winning is the worst.
Edit - One advantage of Perth winning, as someone else said above, is that it keeps WSW very narrowly alive which gives them more motivation against Adelaide tomorrow. So it might be nearly as good as a draw, although it does mean Perth would only have to beat Newcastle in the last match to finish above us even if we beat MAC.