I simply went by what it says in the AP. However, looking further I note it also says people with more than 3 years suitable experience may be given 2 years seniority and comissioned on entry as Fg Offs. I suppose there's some admin reason for not calling that qualified entry - it's case-by-case rather than based on a defined qualification.
Agreed. I had not read the AP so assumed 'suitable experience' equated to 'qualified'; but the main point is, as you say, that there is on a case-by-case basis some (minor) latitude in joining ranks and pay.