Intertextuality in the Four Gospels

Last Sunday in my sermon, I referenced some statististical percentage information about the Bible, and promised to produce a visual grid; it is as follows:

Matthew - Mark - Luke - John

<-------------93%-------->

58%----------------------->

<-----------------------41%

<---------------------------------8%

Broken down, what it means is, Mark contains 93% of the same material as Matthew and Luke. This means that 7% of its material is unique unto itself.

Matthew contains 58% of the same material as Mark and Luke. This means that 42% of its material is unique unto itself.

Luke contains 41% of the same material as Matthew and Mark. This means that 59% of its material is unique unto itself.

And John only contains 8% of the same material as Matthew, Mark, and Luke. This means that 92% of its material is unique unto itself.