I think the numbers depend on the information that each writer is putting out, and each one is different. Each test is composed of various inputs - the questions are themselves based on a matrix that could have come from Riso, Palmer, or from Naranjo himself, with the test-maker also misinterpreting or not comprehending the original matrix from which they are working. This test is supposedly overseen by Beatrice Chestnut whose book leans heavily on Naranjo's work, especially with regard to his revisioning of the subtypes. I got an SP 4 from it. From the eclectic energies test I usually get a SX 5. So, it's hard to know which is which and what is what. As with any detective work once we try to think about the evidence that might convict a certain perp, we find that evidence. But the evidence could equally convict another perp. I am both fourish and fivish, and all the subtypes are there, too, depending on the description from which I am working. To an extent this is the blind leading the blind. Naranjo is now over eighty and in some of his talks he has waived away the enneagram as a foolish thing that isn't well-constructed. He has also dissed Riso. And Ichazo. Lots of o's in the enneagram world. The MBTI is more down to earth perhaps and more Protestant, more empirical.