A 79% page-wide average sounds compelling until you remember this is early June and most of these fixtures are Australian lower-division and youth football — exactly the kind of environment where small samples inflate every rate. Seven or eight matches is not a track record, it's a run of form that one defensive coach or a couple of injuries can reverse overnight. St. George Saints U20 and Caboolture look pristine right now, but U20 football in particular skews high-scoring almost structurally; backing BTTS there isn't an edge, it's just paying for a baseline that's baked in.
The sharper angle here is filtering for sides with 10-plus matches who are still holding above 80% — those are the numbers worth trusting. Anything under eight fixtures, treat it as a watch list, not a betting signal.