I wasn’t disputing the number; I don’t particularly care about that. I was disputing the notion that each of those Protestant denominations claims to “authoritatively” interpret Scripture. They may claim to do so correctly, but I don’t think most of them claim to do so authoritatively. That’s a real and important difference.
But when a denomination “claims to do so correctly” as opposed to what is the claim of another denomination in the interpretation of scripture, why then must someone believe the former as opposed to the latter? Was it the intent of those who wrote scripture, that their interpretation be subject to multiple and frequently contradictory meanings? or did Christ establish a single Church to insure that His “Great Commission” be truthfully disseminated?