INTJ = INTj. Straightforward. MBTI just uses a wrong order of functions.
INTJ = INTp. MBTI just uses a wrong definition of the j/p dichotomy.
INTJ = INTj or INTp. Depends on subtype!
INTJ = INTj or INTp or ENTj or ENTp. MBTI uses different definitions for I/E and p/j.
INTJ = ???. MBTI uses different definitions for all dichotomies.
Other opinions...?