flightleader, I am confused by your question.
1: there is no new tax.
2: tax ceilings have been raised
therefore just about everybody is better off, the more you earn the more better off you are.
yes 744 captains earn more than $120k so are better off.
737 drivers earn more than $120k [except perhaps F/Os at the lesser paid Airlines so they are better off as well, though not as well off as the 744 captains.
Captains on C152s are only a little better off
Captains on MS FS may not have a change!