I think your understanding of EAS is wrong. From what I know, you aren't given 'bonus points' as such, but rather an eligibility status of yes or no.
Now if you're eligible for EAS, regardless of the severity of your disadvantage, you get placed into a separate pool of applicants who have also eligible for EAS. Each university sets aside a certain number of EAS places in which only EAS eligibile applicants can receive.
Taking USyd Law as an example, let us just say that there are 200 places. Again, let us assume that 10 places are reserved for EAS applicants. That means, only those who are eligible for EAS can be offered one of those ten spots. I must stress that severity does not matter and does not affect anything, other than a higher chance of eligibility status for EAS.
Using the above example again, it states that the applicant must be within five points of the preferred course. That means even if you do get EAS, you still have to be within the five point limit.
From this pool of EAS applicants, the top ten EAS applicants with the highest ATAR are offered the EAS spots. But, because law is an ultra competitive high demand course, those ten places will be filled up before we reach the person who was five points below. That means, that 10th placed person in 2009 had an ATAR of 97.25.
Of course, realistically, more than ten places are on offer for EAS applicants, and 200 places was just a number I pulled out of my head.
Hope that clears up any confusion.