FMRAM said:
Yes, I really want to know.
"Nose authority" is the physical ability to move the nose around with control, typically in the pitch axis. If you can fly straight and level, and then have your nose 90 deg different in a very short time, you have "great nose authority".
Nose authority is best used in BFM to get weapons aimed at the other guy quickly. If you can aim weapons widely without physically moving your nose (like off-boresight), then you have a good "sensor nose".
I am now standing by for the inevitable technical verbage beat down from the WTIs and FWS grads in the forum.