The Epistemology of the ILI/LII Divide
I think that the p/j controversy is so special among the INTx types because the characteristics of each are ultimately applied differently for different people. INTxs are very independent, and they may use the qualities of either class in different ways. For instance, an INTx might approach something as an irrational if unsure of the potential value, and then develop a specific axiology typical of a rational as the object gradually becomes seemingly more familiar. How the object is eventually represented in the mind may differ subjectively and that is why each LII may seem idiosyncratic for the perspectives they ultimately defend (Hegel's Aufhebung), whereas ILIs are generally similar for accepting the traits each must accumulate in order to suspend judgment (Pyrrho's Epoché. The strengths of each person lies in where they are most certain; those with a certain holistic preference for decision or indecision will seem markedly rational or irrational but for most there will be a skeptic/pragmatic balance with respect to a range of individually-justified concepts spread as far as can be conceived. The essence of this enigma has puzzled philosophers for centuries and has taken many forms; specifically, the Einstellung effect indicates that preinclinations can be blinding to the initial perception of a novel condition and Quine-Duhem Thesis demonstrates that once an experimental result has been obtained it can be explained by alternate but equally plausible hypotheses.
Quod Erat Demonstrandum.