Yes, the Sophia cannot recreate the scale and power of orchestral music in the same way any speaker of its size cannot. The Kharmas 1.0 and 3.2, Audio Physics Virgos, Avantis and ProAc 3.8 models I have listened with "fell down" as well in that regard.
The Sophias will play most music in a more coherent manner than the Watt 3.2 model. The Sophias drivers, crossovers and cabinet structure are more advanced than the Watt 3.2, and should offer better performance in most every regard. You might want to ask Wilson, as they will likely be forthright about what to expect from each. The Watt/Puppy 7 is a more powerful, dynamic and more detailed extension of the Sophias, but in an entirely different price category as well.