That's incorrect. But regardless... so what? "Jumbo shrimp" may be an oxymoron, but it isn't a contradiction, unlike Luther's doctrine of sola scriptura.
What's important is that Luther's doctrine of "the Bible alone," as the sole rule of faith, isn't biblical.
That makes Luther's doctrine self-contradictory, or incoherent.
But though we, or an angel from heaven, preach any other gospel unto you than that which we have preached unto you, let him be accursed. As we said before, so say I now again, If any man preach any other gospel unto you than that ye have received, let him be accursed. Galatians 1:8-9
Please show a source other than scripture that proves the apostles taught the assumption of Mary.
And the RCC's 'tradition' IS??
You guys want it both ways; but Homie don't play dat.