The Roman Catholic Church holds the erroneous and heretical position that their tradition and dictates of the pope are equal with the authority of Scripture. A blasphemous position.
"82 As a result the Church, to whom the transmission and interpretation of Revelation is entrusted, "does not derive her certainty about all revealed truths from the holy Scriptures alone.
Both Scripture and Tradition must be accepted and honored with equal sentiments of devotion and reverence."
Source
Sola Scriptura holds the position that the Scriptures alone are the final authority of all matters of faith and practice.
2 Timothy 3:16-17
All scripture
is given by inspiration of God, and
is profitable for doctrine, for reproof, for correction, for instruction in righteousness:
17That the man of God may be perfect, thoroughly furnished unto all good works.
God's word alone is pure and uncontaminated. It is infallible. It is God's Word.
John 17:17
Sanctify them through thy truth: thy word is truth.