Psygnosis Liverpool England is why he mentioned that I think.
Washington or New York ect. USA would warrent an NTSC release and an Osaka Japan would warrent the NTSC J one be ripped.
But then again there are dual brand games like Shadow of the Beast 2 Victor/Psygnosis which the NTSC J and the PAL versions are different programmed versions so probably have different music but not the NTSC U versions need logging for example because none of the brands are USA brands so NTSC U isn't the real format but in Beast's case NTSC J and PAL are the correct ones because it was a 2 version title.
Whilst Puggsy AMIGA's music may come from the NTSC version and imported as PAL music for the AMIGA game Psygnosis Liverpool is the place of Puggsy so if it was slower than the AMIGA one that was just the way it was programmed in YM and not because it's American Made.
As I'm getting his logic I agree with him and think that Puggsy should be logged in PAL. But then I'm a man which wouldn't mind a triple format approach where if the speed of sounds at all are different all versions need logging in all speeds but thats too much work so originals is best for now so Sony Liverpool PAL it is for Puggsy for me as thats it's origins and thats what I would prefer to listen to if thats the correct speed which it is.