for Blu-ray Pure Audio disc, if I only use PCM 5.1 mode, is there a difference vs. CD?

So I’m reading the spec. of this music Blu-ray 50GB disc, it says 24 bit / 96kHz, and it plays at 3 modes: PCM 5.1/ dts-HD / Dolby TrueHD

Suppose I only have a left / right speaker set and play…

for Blu-ray Pure Audio disc, if I only use PCM 5.1 mode, is there a difference vs. CD?

Source: [H]ardOCP – for Blu-ray Pure Audio disc, if I only use PCM 5.1 mode, is there a difference vs. CD?