There is an important element in 1984 that is missing from BNW and very relevant to modern history: the never-ending fictious war between several similar regimes to justify internal control.
In my opinion, the movie "Brazil" (inspired by 1984) made the same argument even more modern by replacing that war on some external "enemy" with a war on internal "terrorists".
Unfortunately, 1984 and BNW are not exclusive, and certainy social psychology can implement elements of both.
Brave New World has an enemy: nonconformists within the society itself.
If you ask me,
that's both much more insidious and more relevant to the US in the 21st century.
In my opinion, the movie "Brazil" (inspired by 1984) made the same argument even more modern by replacing that war on some external "enemy" with a war on internal "terrorists".
Unfortunately, 1984 and BNW are not exclusive, and certainy social psychology can implement elements of both.