Warning! Pure speculation commencing...
Hopefully those with actual expertise will chime in and correct my errant pondering as needed.
In a live chat with Erin's Audio Corner, Greg Timbers stated that there's an inverse relationship between the dispersion width of the speaker and the liveliness of the speaker (I. E. Wider dispersion places more demands on the tweeter for the same on axis SPL, reducing liveliness).
2) Compression drivers and larger woofers have less of an impedence mismatch with the air, and more efficiently transfer energy to the air. You could argue that higher sensitivity simply results in less power required...
But 3), the magnitude of SPL transients in live music aren't captured in the types of distortion and compression testing done by reviewers (No, I'm not saying the liveliness of speakers like the 4367 can't be measured, I'm saying it simply may not be measured in the current suite of tests) . Peak live music SPL for even acoustic instruments is commonly in the range of 115db or higher (see Amir's video
here). That same video notes that a specialized peak spl detector is required to accurately measure those peaks, whereas a typical SPL meter would show a lower number. Therefore, I wonder if the large woofer/compression driver combination comes just a bit closer to fully reproducing the types of low duration high intensity peak SPL transients that are commonly found in music, and we perceive those speakers as 'more dynamic', or 'more live/realistic' in comparison to wider dispersion, lower sensitivity, lower max SPL capable speakers.
Edit: even if the transients in recorded music are lower, might it be that the same factors reproduce those transients just a bit more faithfully?
End speculation.