HGSS lowkey butchers the original tracks
Gen2 is mostly carried by "SOVL" and once you remove that, all the flaws people complain about become very obvious
To make myself clearer. The SoundFont of HGSS is quite mediocre (it gets mogged by countless SNES/GBA/PS1/DS games) and it's badly used during battles.
The guy in charge of remixing Red's theme, for example didn't get that the first notes are played alone to evoke a majestic and /dangerous/ feeling (think of the music from Psycho or Jaw).
https://www.youtube.com/watch?v=hAOGtJLMHlcHe thought that adding shit on top of one another makes a music better. That's why he put that cringe harp which gives an entirely different feeling.
https://www.youtube.com/watch?v=SYTS2sJWcIsAnd it's not just a case of "old good, new bad". There are some remakes that do know how to make the music up to date while keeping the original intent but this aint it.
It's not bad but doesn't reach the mark.