Huh? Ok, I'll bite. SNES bass is hurt by it's filter process... It affects not just one source, but the entire lowband frequency output. Bass is basically EQ'd down in db, reducing it's presence in the mix or producing odd volume/clipping variances when measures are taken in attempt to make the lowband more prominent. Fact.
It's not a matter of choice, the SNES sound system was gimped for bass, by the sound systems design. Unintentional as it might have been. But IDK, I haven't exactly asked Kutaragi himself about WTF he was thinking either... Wavetable synthesis was a big deal back then, but it's got barely any love/following today.