Do you know of a YouTube video of it?
Specifically from the "Yuzo Koshiro BEST Collection Vol. 2" version, and not the "Bare Knuckle Original Soundtrack"?
Speaking of which.... this might be a stupid question, but.... do you think they'll just have the Genesis versions of the SOR soundtracks on the upcoming Bare Knuckle Original Soundtrack, or do you think they'll use the versions that were on the original soundtrack... but with the YM2612 soundchip? If it's the latter, that'd be pretty nice...
But the 'digitally remastered for the first time' sounds awesome... I wonder if it'll be better than Vertiphon (on FFShrine)'s version.
As for the Attack the Barbarian, by your logic:
Fighting in the Street goes for almost 5 minutes for one loop, whereas the in-game version loops at around 2:20 or something.