If tradition controls interpretation of scripture, then tradition rules scripture.
Isn't there Protestant tradition partly borrowed from existing Catholic tradition?
Also, do any of the founders of Protestantism (is that insulting, do you prefer Reformers?) claim to be prophets, that is do Luther, Calvin, Smyth, Zwingli, et al claim to have received revelation for God applicable beyond themselves to the entire world?
Some from the pre-schism Church (when the Latin Catholics split from the Orthodox), such as the Trinity. But not really too many beyond that stated in the Nicene Creed.
Also, do any of the founders of Protestantism (is that insulting, do you prefer Reformers?) claim to be prophets, that is do Luther, Calvin, Smyth, Zwingli, et al claim to have received revelation for God applicable beyond themselves to the entire world?
Nope. The Bible claims that it is sufficient for all understanding needed for salvation and how to live a Godly life. We take that to heart.