I think we should wait until we see what both the Supreme Goddess and the Demon King can do besides just simply stomping Meliodas and Elizabeth before making claims about Escanor at his peak being stronger than them. I do wonder if they had hands in creating the universe of NNT. We know that they are gods but are they creator gods?
As far as this match goes, Escanor takes it. Current Meliodas casually took down Zeldoris and only lived because Meliodas allowed him to. Escanor beat that Meliodas so Zeldoris wouldn't fare any better.