Spelly and Ecky's dream scenario (maybe not Ecky)

It is possible that if South lose this week but they beat Glenelg the following week they could both end up on the same number of points and the same %age.....
My questions to Spelly and Ecky are:
1. What is the system for determining the highest rank team with respect to % age (how many decimal points 2, 3 or more)
2. If they are tied on percentage does it go to win loss ratio over the season?
Personally I would find highly ironic and amusing if we went through after being tied on percentage but with a 2-1 win ratio over the season South would still miss out......
Next best scenario would be lose but be one point better in for and against so we go through......
My questions to Spelly and Ecky are:
1. What is the system for determining the highest rank team with respect to % age (how many decimal points 2, 3 or more)
2. If they are tied on percentage does it go to win loss ratio over the season?
Personally I would find highly ironic and amusing if we went through after being tied on percentage but with a 2-1 win ratio over the season South would still miss out......
Next best scenario would be lose but be one point better in for and against so we go through......