Of course!
But on these two fora, you have lot of cases of genuine Asperger's, and interacting with them can be difficult, if not frightening sometimes. Here on typo-c, most INTx are considerably healthier (although you have a few exception: see Zara for instance), and this is likely due to a wider array of social interaction, and a genuine desire to understand others.
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Seriously.
One of the most obvious difference I noted when I interacted with the two types was CONTROL, and how and where this control is directed. INTP seem more interested to control themselves, to shape their ego from inside, while INTJ seem more obsessed with the desire to control or to impress others.
When they try to brag (a classic immature -and irrational- behaviour), the hellish imps of INTP-c will frequently compare their type to Einstein or Newton and discuss about it, while the insane robots of the INTJ-forum will instantly display their so-called huge scores on IQ-test. Do you see the difference?