INTP/INTJ distinction

[Fallenman]

So like so many new people before me, I have neglected to research the forums for any arguments on this claim of mine. I find that the search function leaves much to be desired. I know INTP is rampant in an INTP forum, but perhaps i should like to search for a phrase containing INTP, more importantly specifically containing INTP! Perhaps I ask too much? INTP in an INTP forum is basically everywhere...

So my question is this, I want to understand the distinction between INTP and INTJ in mental capability. Now our list of ... INTP candidates is rather... impressive. From Isaac Newton to Einstein, we tend to leave quite a mark on the world, I would dare say. But it seems to me that the general claim is that INTJ's tend to be the smarter of the two, or the ones who become the masters of their field quickest and most thoroughly. Perhaps I captured this wrong, feel free to correct me, constructive criticisms are always welcomed.

So heres my conjecture... Is it that INTJ's are able to completely and utterly master a subject and do so intuitively in the sense that if you have a deductive argument with 5 premises and a conclusion, give an INTJ some background info on the question at hand, give him 1 or 2 premises and wallah! hes already seen the conclusion, and maybe retroactively goes back and explicitly states premises 3 and 4, although they're not quite as important now that they've got the conclusion. And so, when an intj is given a concept they are able to read it and then get to conclusion X which encompasses the whole matter of the subject. This is what I conjecture intuition works, and I suspect that INTJ's J function is able to take conclusion X and then decide definitively on some course of action, what ever that may be... Give an INTP the same situation, and all this follows except once they've gotten concept X they examine concept Y, see some similarities and produce concept Z, but they are able to produce concept Z because rather than making a course of action with concept x they had the foresight to stand back and.. combine the two concepts and then imaginatively conjecture concept Z? It seems like intuition for both creatures INTj/INTp should allow for this to happen... I just don't understand how we tend to expand an area of expertise where INTJ's tend to work exuberantly well within that system, and don't attempt to expand it...

 

[Dogod]

I've had curiosities about this as well. I've taken many MBTI tests, and I get different results each time - INTP or INTJ. I've read about both of them, and I have many qualities of both of them. I seem slightly closer to INTP than INTJ, so that's what I've considered myself, but I definitely don't fit into either one perfectly.
In fact, I have some properties of a sensor also, but I'm clearly closer to N than to S. It isn't as clear with P and J. (I've always been very introverted and thoughtful.)

 

[Cognisant]

The J/P distinction is one of informational acceptance, an INTJ can incorporate data into their mental framework much faster than an INTP because they're less questioning of its validity because to a INTJ the data either fits the established framework or it doesn’t, meanwhile INTPs are less certain, preferring instead to treat rules as guidelines and facts as theories.

A simplistic example.
INTJ = Empirical Logic
INTP = Fuzzy Logic