Sola Scriptura comes from Islam.

I am getting tired of reading all of these websites and posters that state that Catholicsm is based on paganism. So I post this question to everyone who believes it:

1. Muslims believe that the word of God is solely found in a book (Circa 8th Century).

2. Protestants proclaim that the word of God is solely found in a book (16th Century).

Now, on the surface these are two identical beliefs. Does that mean that the notion of "sola scriptura" comes out of Islam? Or are superficial appearances a very poor way to make judgments? Especially with evidence to the contrary?