The link refers to an average of selected SLE candidates, not an eligible score. Eligibility implies a minimum qualification. It specifically says directly below those averages:
"If you don't fit those categories, STILL APPLY. You have to try!"
As with acceptance to WP, there are no minimum scores as part of the whole candidate approach. With that said, there are a couple of axioms that hold true - 1) there is no average Cadet, only statistics that show the average of Cadets, and 2) the only guarantee is that you won't get in if you don't apply.