Here's something interesting: someone made hardware recordings of bits of the Lagrange Point soundtrack on a real NSF, then compared those with how the same music sounds when it goes through a real YM2143!
The guy says the YM2413 doesn't go through the same lowpass filter the real VRC7 sound does, so you hear more treble in the YM version.. But still, it's interesting to hear the differences. Because most of the built-in patches sound so different, tracks #3 and #4 sound awful on the YM!
Well, that's interesting, though not really that useful, heh. That the patch sets are different has always been pretty clear. It's good for another hardware recording of most of the soundtrack, though it might be coming through a TNS board...
YM2413 is well known and emulated; I actually have a pretty good version of its patch set available to me (they're hiding in the NSFPlay source), so I can do this experiment in software.
BTW I think this user (OffGao) is actually the author of NEZPlug++, or at least hosts it at his site?