Agreed with the OP. Socionics judgers/rationals make more sense than mbti judgers.
Most rationals in socionics have type A tendencies while Irrationals are quoted as saying "like" and "uh" frequently relative to rational judgers. Also, socionics judgers base function is actually a judging function, and percievers a perception function.
For this reason many socionics subtypes will mistake themselves for their J/P quasi-identical. For example LSI-Ti subtype (celebok on youtube) and LSI-Se subtype (mkingkilla on youtube). Both Ti Se, however one gives the appearance of a judger,the other a perciever, because those are the functions their subtypes prefer, yet they still have the same exact function layout.
Its the difference between ESTp-Ti Tea Leoni (who many mistake for ENTJ),
vs
stereotypical ESTp-Se Michelle Rodriguez.