What evidence do you have for this statement? None. We have the universally recognized Greek Father St. John of Damascus testifying in favor of the Assumption of Mary and nobody of any stature testifying against it. Give it up. There is no contest.
From the Catholic Encyclopedia on the belief in the Assumption of Mary:
“The belief in the corporeal assumption of Mary is founded on the apocryphal treatise De Obitu S. Dominae, bearing the name of St. John, which belongs however to the fourth or fifth century. It is also found in the book De Transitu Virginis, falsely ascribed to St. Melito of Sardis, and in a spurious letter attributed to St. Denis the Areopagite. If we consult genuine writings in the East, it is mentioned in the sermons of St. Andrew of Crete, St. John Damascene, St. Modestus of Jerusalem and others. In the West, St. Gregory of Tours (De gloria mart., I, iv) mentions it first. The sermons of St. Jerome and St. Augustine for this feast, however, are spurious. St. John of Damascus (P.G., I, 96) thus formulates the tradition of the Church of Jerusalem:
St. Juvenal, Bishop of Jerusalem, at the Council of Chalcedon (451), made known to the Emperor Marcian and Pulcheria, who wished to possess the body of the Mother of God, that Mary died in the presence of all the Apostles, but that her tomb, when opened, upon the request of St. Thomas, was found empty; wherefrom the Apostles concluded that the body was taken up to heaven.”
“...nobody of any stature testifying against it.”
Well, the apostle Paul said that “flesh and blood cannot inherit the kingdom of God”. (1 Cor. 15:50 NAB)
John of Damascus or Paul of apostle?
Mat 23:9 And call no man your father upon the earth: for one is your Father, which is in heaven.
So who do we believe??? Father John, or Jesus???
So John was there??? He saw Mary go up??? If not, his testimony is worthless...