Oakland was very impressive. Maryville is a very good football team.
But, had Oakland's coaching staff matched their players' performance, they would have won with the mercy rule in effect. Oakland coaches had some serious lapses in judgement in the first half that stopped one opportunity to score (on downs), which in turn allowed Maryville to score against a very very poor "prevent" defense (on the last play of the 1st half).
I'll be shocked if the 6A championship game doesn't include a running clock. Oakland is 'that' good.