Sorry if I beat a dead horse but yes,
typically, and all other things being equal, an A2 should make a Gibson style HB smoother and softer sounding.
Below is the frequency response of a vintage SH1, neck position in a LP, played in chords direct to the board through a 1M input. Blue = A2. Red = A5. Responses have been aligned to make obvious the frequential changes but there was also a difference in output level between samples.
Now, this frequency analysis would or might differ with...
-the same pickup with different height settings, strings, pick,
-the same pickup in another guitar,
-the same pickup paired with different pot resistances and/or cable capacitance,
-the same pickup + a different input impedance,
-other mags of the "same" alloys,
-SH1/59's from different eras: the one used in this case is an example from the late 70's / early 80's, with unpotted coils, butyrate bobbins, threaded baseplate, among other differences with a contemporary SH1.
IOW, the EQing illustrated by this pic is not necessarily transposable as a whole to other situations,
supposedly similar.
FWIW (= 2 cents at best, obviously).