You are mistaken. I was not referring to the bible as superstition.
There are many extra-biblical protestant beliefs, even from those who claim to be sola scriptura followers.
It was those beliefs to which I was referring.
And these extra-biblical beliefs dear to protestants are nothing like those in Catholicism. All Catholic beliefs are biblically justifiable, including the condemnation of sola scriptura.
There is no biblical justification, however, for things like, for example, snake-charming.