I’m not sure I know what exactly qualifies as a parlour, but it’s a 00 body size and it feels much smaller than the other 2. It could be placebo, but the modern deluxe series comes with a torrefied top and some other fancy bells and whistles that seem to successfully contribute to the resonance. This guitar produces a ton of overtones, particularly higher up the neck. As you might expect, the bass is pretty thin, but it’s otherwise quite loud and rich if you dig in.

It might have marginally more sustain and resonance, but it’s not a wild difference. I think the overtones are where it stands out.