EIE/ENFj descriptions by Meged and Ocvharov

[Expat]

Whenever I say that "An EIE-Ni is more like a LIE-Ni" I don't mean it absolutely, but only relatively, in the sense than an EIE-Ni is more like a LIE-Ni than an EIE-Fe is like an LIE-Ni, in the sense than an EIE-Ni and a LIE-Ni will behave more similarly than an EIE-Fe and a LIE-Ni. That's all.

But that is fairly trivial, or harmless.

It's a behavioral theory.

So? What does that mean exactly? How does it overrule, or overlap with, model A socionics?