Lonewolf.
Not only does the tail rotor not "see" the same airflow as the head, it doesnt have the same inertia as the head or the same thrust as the head (QED).
Believe me when I say that there is a dramatic and disproportionate decrease in tail rotor thrust when the main rotor thrust diminishes. I have the software from Westlands to prove it. A 5% reduction in main rotor thrust will cause about a 20% reduction in TR thrust.
The tail rotor needs every one of those 3984 revolutions to push out the bernoulli's
Operating below this operational speed even by a small margin drasticallty reduces the TRE.
Interested to hear about the MR head stalled but pilot not knowing about it???
The only time it is stalled (other than intentionally) is in VRS. When else is it stalled without the pilot noticing until the bottom of an auto?