Jesus says,
John 10:35 - the Scripture cannot be broken--Paul says,
2Ti 3:16 - All Scripture is God-breathed and is useful for teaching, rebuking, correcting and training in righteousness,
Jesus sets the rule:
1. Scripture cannot be broken.
2. Scripture is directly to us from God.
3. It is to be used for doctrine (teaching)
Tradition is not mentioned as being directly from God, nor is it claimed to be FULL of use for teaching.
(2) it doesn't say. The scripture on many occasions identifies the human authors. It says "inspired". Other than that, we agree. So why did Luther lied about Romans 3:28 and threw away the scripture he did not like?
Tradition is not mentioned as being directly from God
True, but neither is the scripture, as I noted. It is mentioned right alongside the scripture in 2 Thessalonians 2:14, as well as in 2 Timothy preceding the passage you cite.