In fairness to @failed_buddhist, you don't need to see them as being at the same level.
That said, I hardly think MBTI is valid as such - and I say that as someone who used to be able to ascertain someone's MBTI type with very high probability (~80% agreement with test results.)
- I have very well-functioning intuition for feelings (INFP, by MBTI standards). I predict many things about people, very accurately.
- Knowing what you will test as doesn't make assertions based on the test results valid. It doesn't directly prove anything else about you.