The dominant function isn't the function that we use to "absorb process" information.
The dominant function is simply the mind's top functional spot.
What function is in the dominant position determines what the dominant position does.
It sounds like you're mistaking the dominant position for a P function, and the auxiliary position for a J function...
Perhaps because you're a P-dom and J-aux...?
J-doms and P-auxs do things differently, ya know?
Hence why ENTJs seem so bossy: they act before they process.
INTJs, on the other hand, seem less bossy: they process before they act.