The careers advisor or appointed person at the school is supposed to give the schools opinion, but yeah it doesn't help if they put down 'slightly'. Hopefully the officer at UAC looks at your supporting documentation thouroughly.
EAS is not a pretty thing to fill out, esp with getting documentation, etc.
Numbers You don't get points, universities get the codes and the severity of your claims in EAS through uac, and will decide on their own system's such as lowering the entry by up to 5 or up to 10 points, some uni's such as Usyd with the broadway scheme also have points but a maximum quota of EAS students, and for certain codes, etc, etc. Some uni's don't accept certain codes such as athletes schemes and EAS is excluded from medicine except at UNSW, etc.